Agree 100% is likely an issue with programmatically hide/show in a nested control as that's what I'm doing.
Here's my setup, in a panel or list control I have this:
<telerik:RadEditor ID="HTMLEditor" runat="server"
ResolvedRenderMode="Classic"
OnClientLoad="OnClientLoad" Width="100%">
<Tools>
<telerik:EditorToolGroup Tag="MainToolbar">
<telerik:EditorTool Name="FindAndReplace" RenderMode="Classic" />
<telerik:EditorSeparator RenderMode="Classic" />
<telerik:EditorSplitButton Name="Undo" RenderMode="Classic">
</telerik:EditorSplitButton>
<telerik:EditorSplitButton Name="Redo" RenderMode="Classic">
</telerik:EditorSplitButton>
<telerik:EditorSeparator RenderMode="Classic" />
<telerik:EditorTool Name="Cut" RenderMode="Classic" />
<telerik:EditorTool Name="Copy" RenderMode="Classic" />
<telerik:EditorTool Name="Paste" RenderMode="Classic" ShortCut="CTRL+V / CMD+V" />
</telerik:EditorToolGroup>
<telerik:EditorToolGroup Tag="Formatting">
<telerik:EditorTool Name="Bold" RenderMode="Classic" />
<telerik:EditorTool Name="Italic" RenderMode="Classic" />
<telerik:EditorTool Name="Underline" RenderMode="Classic" />
<telerik:EditorSeparator RenderMode="Classic" />
<telerik:EditorSplitButton Name="ForeColor" RenderMode="Classic">
</telerik:EditorSplitButton>
<telerik:EditorSplitButton Name="BackColor" RenderMode="Classic">
</telerik:EditorSplitButton>
<telerik:EditorSeparator RenderMode="Classic" />
<telerik:EditorDropDown Name="FontName" RenderMode="Classic">
</telerik:EditorDropDown>
<telerik:EditorDropDown Name="RealFontSize" RenderMode="Classic">
</telerik:EditorDropDown>
</telerik:EditorToolGroup>
</Tools>
</telerik:RadEditor>
Now, in the aspx page I have a javascript block with this function:
function OnClientLoad(editor, args) {
$(".reContentCell > iframe").height("100%");
$(".RadEditor").height("");
}
I tweaked the selector slightly since my post yesterday. Remember you need jQuery to get the implementation of OnClientLoad() to work. If this doesnt solve your issue, let me know.