When the RenderMode property is set to Lightweight, File manager dialogs still load with Classic render mode, even when the <add key="Telerik.Web.UI.RenderMode" value="Lightweight" /> is set globally in the web.config:
<telerik:radeditor RenderMode="Lightweight" runat="server" id="mainRadEditor" EditModes="Design" >
<Tools>
<telerik:EditorToolGroup>
<telerik:EditorTool Name="ImageManager"/>
<telerik:EditorTool Name="DocumentManager"/>
</telerik:EditorToolGroup>
</Tools>
</telerik:radeditor>
This is causing rendering problems and some of the icons do not load.
Hi Wouter,
Thank you for reporting this defect!
The problem is verified and will be fixed in the upcoming in mid-June R2 2020 SP1 release.
The workaround for the old versions is to set the dialog configuration:
<telerik:radeditor RenderMode="Lightweight" runat="server" id="mainRadEditor" EditModes="Design" >
<Tools>
<telerik:EditorToolGroup>
<telerik:EditorTool Name="ImageManager"/>
<telerik:EditorTool Name="DocumentManager"/>
</telerik:EditorToolGroup>
</Tools>
<ImageManager />
<DocumentManager />
</telerik:radeditor>
Regards,
Rumen
Progress Telerik