diff --git a/gradle/changelog/revision_encoding.yaml b/gradle/changelog/revision_encoding.yaml
new file mode 100644
index 0000000000..fc987967a8
--- /dev/null
+++ b/gradle/changelog/revision_encoding.yaml
@@ -0,0 +1,2 @@
+- type: fixed
+  description: Encode revision on extension points to fix breaking change ([#1585](https://github.com/scm-manager/scm-manager/pull/1585))
diff --git a/scm-ui/ui-components/src/Breadcrumb.tsx b/scm-ui/ui-components/src/Breadcrumb.tsx
index 5cf6ee4b20..259c79248e 100644
--- a/scm-ui/ui-components/src/Breadcrumb.tsx
+++ b/scm-ui/ui-components/src/Breadcrumb.tsx
@@ -66,7 +66,7 @@ const BreadcrumbNav = styled.nav`
   display: flex;
   align-items: center;
   margin: 1rem 1rem !important;
-  
+
   width: 100%;
 
   /* move slash to end */
@@ -182,10 +182,22 @@ const Breadcrumb: FC<Props> = ({
     prefixButtons = <PrefixButton>{preButtons}</PrefixButton>;
   }
 
+  const extProps = {
+    baseUrl,
+    revision: revision ? encodeURIComponent(revision) : "",
+    branch: branch ? branch : defaultBranch,
+    path,
+    sources,
+    repository
+  };
+
   return (
     <>
       <div className="is-flex is-align-items-center">
-        <BreadcrumbNav className={classNames("breadcrumb", "sources-breadcrumb", "ml-1", "mb-0")} aria-label="breadcrumbs">
+        <BreadcrumbNav
+          className={classNames("breadcrumb", "sources-breadcrumb", "ml-1", "mb-0")}
+          aria-label="breadcrumbs"
+        >
           {prefixButtons}
           <ul>
             <li>
@@ -207,18 +219,7 @@ const Breadcrumb: FC<Props> = ({
         </BreadcrumbNav>
         {binder.hasExtension("repos.sources.actionbar") && (
           <ActionBar>
-            <ExtensionPoint
-              name="repos.sources.actionbar"
-              props={{
-                baseUrl,
-                revision,
-                branch: branch ? branch : defaultBranch,
-                path,
-                sources,
-                repository
-              }}
-              renderAll={true}
-            />
+            <ExtensionPoint name="repos.sources.actionbar" props={extProps} renderAll={true} />
           </ActionBar>
         )}
       </div>
diff --git a/scm-ui/ui-webapp/src/repos/sources/containers/Content.tsx b/scm-ui/ui-webapp/src/repos/sources/containers/Content.tsx
index 6ac9d6af76..560bb58379 100644
--- a/scm-ui/ui-webapp/src/repos/sources/containers/Content.tsx
+++ b/scm-ui/ui-webapp/src/repos/sources/containers/Content.tsx
@@ -141,7 +141,7 @@ class Content extends React.Component<Props, State> {
             props={{
               repository,
               file,
-              revision,
+              revision: revision ? encodeURIComponent(revision) : "",
               handleExtensionError: this.handleExtensionError
             }}
             renderAll={true}
diff --git a/scm-ui/ui-webapp/src/repos/sources/containers/SourceExtensions.tsx b/scm-ui/ui-webapp/src/repos/sources/containers/SourceExtensions.tsx
index 3cedb7da5a..62d0c550e6 100644
--- a/scm-ui/ui-webapp/src/repos/sources/containers/SourceExtensions.tsx
+++ b/scm-ui/ui-webapp/src/repos/sources/containers/SourceExtensions.tsx
@@ -64,7 +64,15 @@ const SourceExtensions: FC<Props> = ({ repository, baseUrl }) => {
     return <Loading />;
   }
 
-  const extprops = { extension, repository, revision, path, sources, baseUrl };
+  const extprops = {
+    extension,
+    repository,
+    revision: revision ? encodeURIComponent(revision) : "",
+    path,
+    sources,
+    baseUrl
+  };
+
   if (!binder.hasExtension(extensionPointName, extprops)) {
     return <Notification type="warning">{t("sources.extension.notBound")}</Notification>;
   }