I tried to reproduce the problem but to no avail. Could you please provide more detailed information on the specific scenario?
- Which version of RadControls for ASP.NET AJAX and .NET Framework are used in the application?
- Under which browser and its version the problem occurs?
- Could you please provide a simple fully runnable project reproducing the problem so we can investigate it further?
For your convenience I have attached my test page, could you please modify it a point where the problem occurs and send it back?
On a side note, from the provided screenshots I noticed that you are using custom skin for RadSplitter, could you please try to use one of the built-in skins and see if the problem still occurs?
All the best,
the Telerik team
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