diff --git a/app/assets/stylesheets/context_menu.css b/app/assets/stylesheets/context_menu.css
index fa77b5c5e..936dab5a2 100644
--- a/app/assets/stylesheets/context_menu.css
+++ b/app/assets/stylesheets/context_menu.css
@@ -13,7 +13,7 @@
 }
 
 #context-menu ul {
-  width:150px;
+  inline-size:150px;
   border: 1px solid var(--oc-gray-4);
   background:white;
   list-style:none;
@@ -29,28 +29,29 @@
   border:1px solid white;
   display: flex;
 }
-#context-menu li.folder ul { position:absolute; top:-2px; max-height:300px; overflow:hidden; overflow-y: auto; }
-#context-menu li.folder>ul { left:148px; }
+#context-menu li.folder ul { position: absolute; inset-block-start: -2px; max-block-size: 300px; overflow: hidden; overflow-y: auto; }
+#context-menu li.folder>ul { inset-inline-start: 148px; }
 
-#context-menu.reverse-y li.folder>ul, #context-menu li.folder.up>ul { top:auto; bottom:0; }
-#context-menu.reverse-x li.folder ul { left:auto; }
-#context-menu.reverse-x li.folder>ul { right:148px; }
+#context-menu.reverse-y li.folder>ul, #context-menu li.folder.up>ul { inset-block: auto 0; }
+#context-menu.reverse-x li.folder ul { inset-inline-start:auto; }
+#context-menu.reverse-x li.folder>ul { inset-inline-end:148px; }
 
 #context-menu.reverse-y li.folder.down>ul {
-  position:absolute; top:-2px; bottom: auto; max-height:300px; overflow:hidden; overflow-y: auto;
+  position: absolute; inset-block: -2px auto; max-block-size: 300px; overflow: hidden; overflow-y: auto;
 }
 
 #context-menu a {
   text-decoration:none !important;
-  padding: 2px 8px;
+  padding-block: 2px;
+  padding-inline: 8px;
 }
 #context-menu li>a { flex-grow: 1; }
 #context-menu a.disabled, #context-menu a.disabled:hover {color: var(--oc-gray-5);}
-#context-menu li a.submenu { padding-left: 28px;}
+#context-menu li a.submenu { padding-inline-start: 28px;}
 #context-menu li:hover { border:1px solid var(--oc-blue-8); background-color:var(--oc-blue-0); border-radius:3px; }
 #context-menu a:hover {color:var(--oc-blue-9);}
 #context-menu li.folder ul li a:not(.icon) {
-  padding-left: 28px;
+  padding-inline-start: 28px;
 }
 #context-menu li.folder:hover { z-index:40; }
 #context-menu ul ul, #context-menu  li:hover ul ul { display:none; }
diff --git a/app/assets/stylesheets/context_menu_rtl.css b/app/assets/stylesheets/context_menu_rtl.css
deleted file mode 100644
index a271d339f..000000000
--- a/app/assets/stylesheets/context_menu_rtl.css
+++ /dev/null
@@ -1,13 +0,0 @@
-/**
- * Redmine - project management software
- * Copyright (C) 2006-  Jean-Philippe Lang
- * This code is released under the GNU General Public License.
- */
-
-#context-menu li.folder ul { left:auto; right:168px; }
-#context-menu li.folder>ul { left:auto; right:148px; }
-#context-menu li.folder ul li a:not(.icon) {padding-right: 28px;}
-#context-menu li a.submenu {
-   padding-right: 28px;
-   padding-left: 0;
-}
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 36a5f3e61..6ea148f2d 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1683,11 +1683,6 @@ module ApplicationHelper
         javascript_include_tag('context_menu') +
           stylesheet_link_tag('context_menu')
       end
-      if l(:direction) == 'rtl'
-        content_for :header_tags do
-          stylesheet_link_tag('context_menu_rtl')
-        end
-      end
       @context_menu_included = true
     end
     nil