* Fix bug #48428.

module/doc/css/view.ui.css

@@ -14,7 +14,7 @@
 .main-content-cell > .panel {max-height: calc(100vh - 110px); overflow-y: auto;}
 .main-content-cell > .panel > .doc-content {padding-right: 0;}
 
-#contentTree {background: #fff; position: sticky; height: calc(100vh - 180px)!important; overflow: auto; top: 3.5rem; right: 1rem; z-index: 100; flex: 0 1 30%;  min-width: 160px;}
+#contentTree {background: #fff; position: sticky; height: calc(100vh - 180px)!important; overflow: auto; top: 3.5rem; right: 1rem; z-index: 100; flex: 0 1 30%;}
 #contentTree .tree-item .item-content > a {white-space: nowrap; text-overflow: clip; overflow: hidden;}
 
 #docPanel::-webkit-scrollbar,
@@ -26,4 +26,3 @@
 #outlineToggle {display: block; position: absolute; top: 6.5rem; right: 3.5rem; z-index: 100;}
 #docPanel .panel-heading > .panel-actions {min-width: 320px;}
 #docPanel .detail-content {max-width: var(--zt-panel-form-max-width);}
-#docPanel.hasOutline .detail-content {max-width: calc(var(--zt-panel-form-max-width) - 160px);}

module/doc/js/view.ui.js

@@ -6,12 +6,14 @@ window.showHistory = function()
         $('#history, #closeBtn').removeClass('hidden');
         $('#contentTree').addClass('hidden');
         $('#outlineToggle .icon').addClass('icon-menu-arrow-left').removeClass('icon-menu-arrow-right')
+        $('#docPanel .detail-content').css('max-width', 'calc(var(--zt-panel-form-max-width) - 300px)')
     }
     else
     {
         $('#contentTree').removeClass('hidden');
         $('#history, #closeBtn').addClass('hidden');
         $('#outlineToggle .icon').removeClass('icon-menu-arrow-left').addClass('icon-menu-arrow-right')
+        $('#docPanel .detail-content').css('max-width', 'var(--zt-panel-form-max-width)');
     }
 
     $('#hisTrigger').toggleClass('text-primary');
@@ -30,6 +32,7 @@ $(document).on('click', '#closeBtn', function()
 {
     $('#hisTrigger').removeClass('text-primary');
     $('#history, #closeBtn').addClass('hidden');
+    $('#docPanel .detail-content').css('max-width', 'var(--zt-panel-form-max-width)');
 });
 
 window.toggleOutline = function()
@@ -37,6 +40,14 @@ window.toggleOutline = function()
     $('#outlineToggle .icon').toggleClass('icon-menu-arrow-left').toggleClass('icon-menu-arrow-right')
     $('#contentTree').toggleClass('hidden');
     $.cookie.set('hiddenOutline', $('#contentTree').hasClass('hidden'));
+    if($('#contentTree').hasClass('hidden'))
+    {
+        $('#docPanel .detail-content').css('max-width', 'var(--zt-panel-form-max-width)');
+    }
+    else
+    {
+        $('#docPanel .detail-content').css('max-width', 'calc(var(--zt-panel-form-max-width) - 300px)');
+    }
 }
 
 $("#docPanel").on('enterFullscreen', () => {

module/doc/ui/view.html.php

@@ -125,7 +125,6 @@ if(!empty($editors))
 $contentDom = div
 (
     setClass('flex-auto'),
-    isset($outlineTree) ? setClass('hasOutline') : null,
     setID('docPanel'),
     div
     (