In Development
Last Updated: 18 Nov 2025 15:14 by ADMIN
Scheduled for 2025 Q4 SP1

Steps to Reproduce

  1. Open a page containing RadEditor with some content in it
  2. In Design mode, select all text (Ctrl+A)
  3. Delete the selected text
  4. Switch to HTML mode
  5. Switch back to Design mode
  6. Press Ctrl+Z (Undo) a couple of times.
Current Result
  • A JavaScript error is thrown in the browser console
  • The undo operation fails to restore the deleted content
  • Error occurs in _updateBrowserRangeStart method when calling this.range.setStart(e, t)

Expected Result

  • The undo operation should work without errors
  • The previously deleted text should be restored
  • No JavaScript errors should appear in the console
In Development
Last Updated: 08 Sep 2025 11:46 by ADMIN
Scheduled for 2025 Q4 (Nov)

When loading a page configured with RadScriptManager, RadStyleSheetManager, and RadWindowManager using CDN and combined resources, a JavaScript runtime error occurs:

        <telerik:RadScriptManager runat="server" ID="RadScriptManager1"
            AsyncPostBackTimeout="500" EnablePageMethods="true" 
            EnableScriptCombine="true" LoadScriptsBeforeUI="true"
            EnableCdn="true" CdnSettings-TelerikCdn="Enabled" CdnSettings-CombinedResource="Enabled"
            EnableScriptLocalization="true"
            EnableScriptGlobalization="true" />

        <telerik:RadStyleSheetManager ID="RadStyleSheetManager1"
            runat="server"
            EnableStyleSheetCombine="true"
            CdnSettings-TelerikCdn="Enabled" CdnSettings-CombinedResource="Enabled" />

        <telerik:RadWindowManager runat="server" ID="radWindowManager" Style="z-index: 7001;" RenderMode="Lightweight" />
        <telerik:RadWindow runat="server" ID="RadWindowRecommendUs" EnableViewState="false"
            Behaviors="Close" VisibleOnPageLoad="false"
            Width="300px" Height="590px"
            InitialBehaviors="Pin" VisibleStatusbar="false" VisibleTitlebar="true" Modal="true" ReloadOnShow="true" Overlay="false" />

        <telerik:RadWindow ID="RadWindowFacebookLoginCompleteDetails" runat="server"
            Behaviors="Reload" Modal="true" VisibleStatusbar="false"
            Width="720" Height="750"
            IconUrl="/SITE/COMPONENTS/facebook/fb_icon_16X16.png"
             />

        <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Style="width: 100%; min-height: 250px;" />    
Expected behavior:
The page should load without script registration conflicts.

Actual behavior:
The browser console shows an Uncaught Sys.InvalidOperationException, preventing proper execution of Telerik scripts.