diff --git a/modules/backend/assets/css/october.css b/modules/backend/assets/css/october.css
index fb572f7c55..cc50625691 100644
--- a/modules/backend/assets/css/october.css
+++ b/modules/backend/assets/css/october.css
@@ -115,11 +115,12 @@
 .control-simplelist.is-selectable-box li a:hover .image >i {color:rgba(0,0,0,0.45)}
 .list-preview .control-simplelist.is-selectable ul {margin-bottom:0}
 .drag-noselect {-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
+@media all and (-ms-high-contrast:none) {::-ms-backdrop,.control-scrollbar > .scrollbar-scrollbar .scrollbar-track .scrollbar-thumb{position:absolute !important }}
 .control-scrollbar {position:relative;overflow:hidden;height:100%;-webkit-transform:translateZ(0);-ms-transform:translateZ(0);transform:translateZ(0)}
 .control-scrollbar >div {-webkit-transform:translateZ(0);-ms-transform:translateZ(0);transform:translateZ(0)}
 .control-scrollbar >.scrollbar-scrollbar {position:absolute;z-index:100}
 .control-scrollbar >.scrollbar-scrollbar .scrollbar-track {background-color:transparent;position:relative;-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px}
-.control-scrollbar >.scrollbar-scrollbar .scrollbar-track .scrollbar-thumb {background-color:rgba(0,0,0,0.35);-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px;cursor:pointer;overflow:hidden;position:absolute}
+.control-scrollbar >.scrollbar-scrollbar .scrollbar-track .scrollbar-thumb {background-color:rgba(0,0,0,0.35);-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px;cursor:pointer;overflow:hidden;position:sticky}
 .control-scrollbar >.scrollbar-scrollbar.disabled {display:none !important}
 .control-scrollbar.vertical >.scrollbar-scrollbar {right:0;margin-right:5px;width:6px}
 .control-scrollbar.vertical >.scrollbar-scrollbar .scrollbar-track {height:100%;width:6px}
diff --git a/modules/backend/assets/less/controls/scrollbar.less b/modules/backend/assets/less/controls/scrollbar.less
index 92f6bd4449..9be9518901 100644
--- a/modules/backend/assets/less/controls/scrollbar.less
+++ b/modules/backend/assets/less/controls/scrollbar.less
@@ -8,6 +8,26 @@
 
 @scrollbar-thumb-size: 6px;
 
+//
+// IE11 Hack to bypass position:sticky on line 55
+//
+@media all and (-ms-high-contrast:none) {
+    * {
+        &::-ms-backdrop {
+            position: absolute !important;
+        }
+    }
+    .control-scrollbar {
+        >.scrollbar-scrollbar {
+            .scrollbar-track {
+                .scrollbar-thumb {
+                    position: absolute !important;
+                }
+            }
+        }
+    }
+}
+
 .control-scrollbar {
     position: relative;
     overflow: hidden;
@@ -31,7 +51,8 @@
                 .border-radius(5px);
                 cursor: pointer;
                 overflow: hidden;
-                position: absolute;
+                /* Important use position: sticky - see github issue: https://github.com/octobercms/october/issues/4621 */
+                position: sticky;
             }
         }
 
diff --git a/modules/backend/widgets/mediamanager/assets/css/mediamanager.css b/modules/backend/widgets/mediamanager/assets/css/mediamanager.css
index 74e0a857ab..d38c9b3a2a 100644
--- a/modules/backend/widgets/mediamanager/assets/css/mediamanager.css
+++ b/modules/backend/widgets/mediamanager/assets/css/mediamanager.css
@@ -126,4 +126,5 @@ body:not(.no-select) div[data-control="media-manager"] .media-list li:hover h4 a
 @media (max-width:1280px) {div[data-control="media-manager"] .media-list.list li {width:230px }}
 @media (max-width:1024px) {div[data-control="media-manager"] .media-list.list li {display:block;width:auto }}
 @media (max-width:768px) {div[data-control="media-manager"] [data-control="preview-sidebar"],div[data-control="media-manager"] [data-command="toggle-sidebar"] {display:none !important }div[data-control="media-manager"] .media-list.list {padding:0 }div[data-control="media-manager"] .media-list.list li {-webkit-border-radius:0;-moz-border-radius:0;border-radius:0;margin:0;border-right:none;border-left:none;border-bottom:none }}
-@media (max-width:480px) {div[data-control="media-manager"] [data-control="left-sidebar"] {display:none !important }}
\ No newline at end of file
+@media (max-width:480px) {div[data-control="media-manager"] [data-control="left-sidebar"] {display:none !important }}
+#right-sidebar-mediamanager.hide {display:table-cell !important;opacity:0;width:0px !important;overflow:hidden}
diff --git a/modules/backend/widgets/mediamanager/assets/less/mediamanager.less b/modules/backend/widgets/mediamanager/assets/less/mediamanager.less
index 9ff16d3939..69b9aa45f0 100644
--- a/modules/backend/widgets/mediamanager/assets/less/mediamanager.less
+++ b/modules/backend/widgets/mediamanager/assets/less/mediamanager.less
@@ -698,3 +698,15 @@ body:not(.no-select) {
         }
     }
 }
+
+//
+// Important - The right sidebar panel needs to be displayed and not hidden
+// for the scrollbar to work. In this case I have overwritten the hide class
+// for display:none and used opacity: 0 see github issue: https://github.com/octobercms/october/issues/4601
+//
+#right-sidebar-mediamanager.hide {
+	display: table-cell !important;
+	opacity: 0;
+	width: 0px !important;
+	overflow: hidden;
+}
\ No newline at end of file
diff --git a/modules/backend/widgets/mediamanager/partials/_body.htm b/modules/backend/widgets/mediamanager/partials/_body.htm
index fef45ae219..8363a8ae6e 100644
--- a/modules/backend/widgets/mediamanager/partials/_body.htm
+++ b/modules/backend/widgets/mediamanager/partials/_body.htm
@@ -46,7 +46,7 @@
                                             </div>
                                         </div>
 
-                                        <div class="layout-cell w-300 panel border-left no-padding <?= !$sidebarVisible ? 'hide' : null ?>" data-control="preview-sidebar">
+                                        <div id="right-sidebar-mediamanager" class="layout-cell w-300 panel border-left no-padding <?= !$sidebarVisible ? 'hide' : null ?>" data-control="preview-sidebar">
                                             <!-- Right sidebar -->
                                             <?= $this->makePartial('right-sidebar') ?>
                                         </div>