diff --git a/src/main/scala/gitbucket/core/controller/IssuesController.scala b/src/main/scala/gitbucket/core/controller/IssuesController.scala
index 7975b843b..788227fcb 100644
--- a/src/main/scala/gitbucket/core/controller/IssuesController.scala
+++ b/src/main/scala/gitbucket/core/controller/IssuesController.scala
@@ -279,6 +279,8 @@ trait IssuesControllerBase extends ControllerBase {
                 enableWikiLink = false,
                 enableRefsLink = true,
                 enableAnchor = true,
+                enableLineBreaks = true,
+                enableTaskList = true,
                 hasWritePermission = true
               )
               .toString()
@@ -311,6 +313,8 @@ trait IssuesControllerBase extends ControllerBase {
                 enableWikiLink = false,
                 enableRefsLink = true,
                 enableAnchor = true,
+                enableLineBreaks = true,
+                enableTaskList = true,
                 hasWritePermission = true
               )
               .toString()
diff --git a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
index 1ed0b1093..5bd963464 100644
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -169,31 +169,19 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    */
   post("/:owner/:repository/_preview")(referrersOnly { repository =>
     contentType = "text/html"
-    val filename = params.get("filename")
-    filename match {
-      case Some(f) =>
-        helpers.renderMarkup(
-          filePath = f.split("/").toList,
-          fileContent = params("content"),
-          branch = repository.repository.defaultBranch,
-          repository = repository,
-          enableWikiLink = params("enableWikiLink").toBoolean,
-          enableRefsLink = params("enableRefsLink").toBoolean,
-          enableAnchor = false
-        )
-      case None =>
-        helpers.markdown(
-          markdown = params("content"),
-          repository = repository,
-          branch = repository.repository.defaultBranch,
-          enableWikiLink = params("enableWikiLink").toBoolean,
-          enableRefsLink = params("enableRefsLink").toBoolean,
-          enableLineBreaks = params("enableLineBreaks").toBoolean,
-          enableTaskList = params("enableTaskList").toBoolean,
-          enableAnchor = false,
-          hasWritePermission = hasDeveloperRole(repository.owner, repository.name, context.loginAccount)
-        )
-    }
+    val filename = params.get("filename").getOrElse("temporary.md")
+    helpers.renderMarkup(
+      filePath = filename.split("/").toList,
+      fileContent = params("content"),
+      branch = repository.repository.defaultBranch,
+      repository = repository,
+      enableWikiLink = params("enableWikiLink").toBoolean,
+      enableRefsLink = params("enableRefsLink").toBoolean,
+      enableLineBreaks = params("enableLineBreaks").toBoolean,
+      enableTaskList = params("enableTaskList").toBoolean,
+      enableAnchor = false,
+      hasWritePermission = hasDeveloperRole(repository.owner, repository.name, context.loginAccount)
+    )
   })
 
   /**
@@ -905,6 +893,8 @@ trait RepositoryViewerControllerBase extends ControllerBase {
                 enableWikiLink = false,
                 enableRefsLink = true,
                 enableAnchor = true,
+                enableLineBreaks = true,
+                enableTaskList = true,
                 hasWritePermission = true
               )
               .toString()
diff --git a/src/main/scala/gitbucket/core/controller/api/ApiRepositoryContentsControllerBase.scala b/src/main/scala/gitbucket/core/controller/api/ApiRepositoryContentsControllerBase.scala
index 847beff3e..27b093f3a 100644
--- a/src/main/scala/gitbucket/core/controller/api/ApiRepositoryContentsControllerBase.scala
+++ b/src/main/scala/gitbucket/core/controller/api/ApiRepositoryContentsControllerBase.scala
@@ -90,7 +90,17 @@ trait ApiRepositoryContentsControllerBase extends ControllerBase {
                     path,
                     "\" id=\"file\">",
                     "<article>",
-                    renderMarkup(path.split("/").toList, new String(c), refStr, repository, false, false, true).body,
+                    renderMarkup(
+                      filePath = path.split("/").toList,
+                      fileContent = new String(c),
+                      branch = refStr,
+                      repository = repository,
+                      enableWikiLink = false,
+                      enableRefsLink = false,
+                      enableAnchor = false,
+                      enableLineBreaks = true,
+                      enableTaskList = true
+                    ).body,
                     "</article>",
                     "</div>"
                   ).mkString
diff --git a/src/main/scala/gitbucket/core/plugin/Renderer.scala b/src/main/scala/gitbucket/core/plugin/Renderer.scala
index 58726077d..c3692a60a 100644
--- a/src/main/scala/gitbucket/core/plugin/Renderer.scala
+++ b/src/main/scala/gitbucket/core/plugin/Renderer.scala
@@ -20,7 +20,7 @@ trait Renderer {
 
 object MarkdownRenderer extends Renderer {
   override def render(request: RenderRequest): Html = {
-    import request._
+    import request.*
     Html(
       Markdown.toHtml(
         markdown = fileContent,
@@ -29,8 +29,8 @@ object MarkdownRenderer extends Renderer {
         enableWikiLink = enableWikiLink,
         enableRefsLink = enableRefsLink,
         enableAnchor = enableAnchor,
-        enableLineBreaks = false,
-        enableTaskList = true,
+        enableLineBreaks = enableLineBreaks,
+        enableTaskList = enableTaskList,
         hasWritePermission = hasWritePermission
       )(context)
     )
@@ -51,6 +51,8 @@ case class RenderRequest(
   enableWikiLink: Boolean,
   enableRefsLink: Boolean,
   enableAnchor: Boolean,
+  enableLineBreaks: Boolean,
+  enableTaskList: Boolean,
   hasWritePermission: Boolean,
   context: Context
 )
diff --git a/src/main/scala/gitbucket/core/view/helpers.scala b/src/main/scala/gitbucket/core/view/helpers.scala
index 88d118948..bcf33077a 100644
--- a/src/main/scala/gitbucket/core/view/helpers.scala
+++ b/src/main/scala/gitbucket/core/view/helpers.scala
@@ -101,6 +101,7 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
   /**
    * Converts Markdown of Wiki pages to HTML.
    */
+  @deprecated("This doesn't apply render plugins. Should use renderMarkup() instead.", "4.45.0")
   def markdown(
     markdown: String,
     repository: RepositoryService.RepositoryInfo,
@@ -140,6 +141,8 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
     enableWikiLink: Boolean,
     enableRefsLink: Boolean,
     enableAnchor: Boolean,
+    enableLineBreaks: Boolean,
+    enableTaskList: Boolean,
     hasWritePermission: Boolean = false
   )(implicit context: Context): Html = {
 
@@ -155,6 +158,8 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
         enableWikiLink,
         enableRefsLink,
         enableAnchor,
+        enableLineBreaks,
+        enableTaskList,
         hasWritePermission,
         context
       )
diff --git a/src/main/twirl/gitbucket/core/helper/commitcomment.scala.html b/src/main/twirl/gitbucket/core/helper/commitcomment.scala.html
index ecb4e73fe..d27eb3c0a 100644
--- a/src/main/twirl/gitbucket/core/helper/commitcomment.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/commitcomment.scala.html
@@ -29,6 +29,8 @@
             enableWikiLink = false,
             enableRefsLink = true,
             enableAnchor = true,
+            enableLineBreaks = true,
+            enableTaskList = true,
             hasWritePermission = hasWritePermission
           )
       </div>
diff --git a/src/main/twirl/gitbucket/core/issues/commentlist.scala.html b/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
index cbcd64578..5a97f5d57 100644
--- a/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
@@ -24,7 +24,7 @@
       </a>
     </span>
     @if(comment.action != "commit" && comment.action != "merge" && comment.action != "refer"
-    && (isManageable || context.loginAccount.map(_.userName == comment.commentedUserName).getOrElse(false))){
+    && (isManageable || context.loginAccount.exists(_.userName == comment.commentedUserName))){
       <span class="pull-right">
         <a href="#" data-comment-id="@comment.commentId"><i class="octicon octicon-pencil" aria-label="Edit"></i></a>&nbsp;
         <a href="#" data-comment-id="@comment.commentId"><i class="octicon octicon-x" aria-label="Remove"></i></a>
@@ -40,6 +40,8 @@
       enableWikiLink     = false,
       enableRefsLink     = true,
       enableAnchor       = true,
+      enableLineBreaks   = true,
+      enableTaskList     = true,
       hasWritePermission = isManageable
     )
   </div>
@@ -52,7 +54,7 @@
       @helpers.user(issue.get.openedUserName, styleClass="username strong")
       <span class="muted">commented @gitbucket.core.helper.html.datetimeago(issue.get.registeredDate)</span>
       <span class="pull-right">
-        @if(isManageable || context.loginAccount.map(_.userName == issue.get.openedUserName).getOrElse(false)){
+        @if(isManageable || context.loginAccount.exists(_.userName == issue.get.openedUserName)){
           <a href="#" data-issue-id="@issue.get.issueId"><i class="octicon octicon-pencil" aria-label="Edit"></i></a>
         }
       </span>
@@ -66,6 +68,8 @@
         enableWikiLink     = false,
         enableRefsLink     = true,
         enableAnchor       = true,
+        enableLineBreaks   = true,
+        enableTaskList     = true,
         hasWritePermission = isManageable
       )
     </div>
@@ -339,6 +343,8 @@
           enableWikiLink     = false,
           enableRefsLink     = true,
           enableAnchor       = true,
+          enableLineBreaks   = true,
+          enableTaskList     = true,
           hasWritePermission = isManageable
         )
       </div>
@@ -400,7 +406,7 @@ $(function(){
           // diff view
           const tr = comment.closest('.not-diff');
           if(tr.length > 0){
-            if(tr.prev('.not-diff').length == 0){
+            if(tr.prev('.not-diff').length === 0){
               tr.next('.not-diff:has(.reply-comment)').remove();
             }
             tr.remove();
@@ -410,7 +416,7 @@ $(function(){
           const panel = comment.closest('div.panel:has(.commit-comment-box)');
           if(panel.length > 0){
             comment.parent('.commit-comment-box').remove();
-            if(panel.has('.commit-comment-box').length == 0){
+            if(panel.has('.commit-comment-box').length === 0){
               panel.remove();
             }
           } else {
diff --git a/src/main/twirl/gitbucket/core/issues/issue.scala.html b/src/main/twirl/gitbucket/core/issues/issue.scala.html
index 721713549..88829c294 100644
--- a/src/main/twirl/gitbucket/core/issues/issue.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/issue.scala.html
@@ -16,7 +16,7 @@
   @gitbucket.core.html.menu("issues", repository){
     <div>
       <div class="show-title pull-right">
-        @if(isManageable || context.loginAccount.map(_.userName == issue.openedUserName).getOrElse(false)){
+        @if(isManageable || context.loginAccount.exists(_.userName == issue.openedUserName)){
           <a class="btn btn-default" href="#" id="edit">Edit</a>
         }
         @if(isEditable){
diff --git a/src/main/twirl/gitbucket/core/repo/blob.scala.html b/src/main/twirl/gitbucket/core/repo/blob.scala.html
index 5387a56c4..981dbf750 100644
--- a/src/main/twirl/gitbucket/core/repo/blob.scala.html
+++ b/src/main/twirl/gitbucket/core/repo/blob.scala.html
@@ -83,7 +83,18 @@
     @defining(helpers.isRenderable(pathList.last)){ isRenderable =>
       @if(!isBlame && isRenderable) {
         <div class="box-content-bottom @if(content.viewType == "text"){ markdown-body } " style="padding-left: 20px; padding-right: 20px;">
-          @helpers.renderMarkup(pathList, content.content.getOrElse(""), branch, repository, false, false, true, hasWritePermission)
+          @helpers.renderMarkup(
+            filePath = pathList,
+            fileContent = content.content.getOrElse(""),
+            branch = branch,
+            repository = repository,
+            enableWikiLink = false,
+            enableRefsLink = false,
+            enableAnchor = true,
+            enableLineBreaks = false,
+            enableTaskList = true,
+            hasWritePermission = hasWritePermission
+          )
         </div>
       }else{
         @if(content.viewType == "text"){
diff --git a/src/main/twirl/gitbucket/core/repo/files.scala.html b/src/main/twirl/gitbucket/core/repo/files.scala.html
index b0fbae93c..39c982f1f 100644
--- a/src/main/twirl/gitbucket/core/repo/files.scala.html
+++ b/src/main/twirl/gitbucket/core/repo/files.scala.html
@@ -220,7 +220,7 @@
           }
         </div>
       </div>
-      <div class="box-content-bottom markdown-body" style="padding-left: 20px; padding-right: 20px;">@helpers.renderMarkup(filePath, content, branch, repository, false, false, true)</div>
+      <div class="box-content-bottom markdown-body" style="padding-left: 20px; padding-right: 20px;">@helpers.renderMarkup(filePath, content, branch, repository, false, false, false, true, true)</div>
     }
   }
 }
diff --git a/src/main/twirl/gitbucket/core/wiki/page.scala.html b/src/main/twirl/gitbucket/core/wiki/page.scala.html
index c60683cbd..494534935 100644
--- a/src/main/twirl/gitbucket/core/wiki/page.scala.html
+++ b/src/main/twirl/gitbucket/core/wiki/page.scala.html
@@ -66,7 +66,9 @@
             repository = repository,
             enableWikiLink = true,
             enableRefsLink = false,
-            enableAnchor = false
+            enableAnchor = false,
+            enableLineBreaks = false,
+            enableTaskList = false
           )
         </div>
       }.getOrElse{
@@ -97,7 +99,9 @@
           repository = repository,
           enableWikiLink = true,
           enableRefsLink = false,
-          enableAnchor = true
+          enableAnchor = true,
+          enableLineBreaks = false,
+          enableTaskList = false
         )
       </div>
       @footer.map { footerPage =>
@@ -112,7 +116,9 @@
             repository = repository,
             enableWikiLink = true,
             enableRefsLink = false,
-            enableAnchor = false
+            enableAnchor = false,
+            enableLineBreaks = false,
+            enableTaskList = false
           )
         </div>
       }.getOrElse{