Thank you for writing.
By default, column chooser is top most. That is why it is displayed over the browser as well. If you need to disable it, set the GridViewElement.ColumnChooser.TopMost
property to false.
I hope this information helps. Should you have further questions I would be glad to help.
Telerik by Progress
Check out the Windows Forms project converter, which aids the conversion process from standard Windows Forms applications written in C# or VB to Telerik UI for WinForms.For more information check out this blog post
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