Tabcontrol issue (1 Viewer)

[FusionIT]

I have a tabcontrol in the plugin I am working on. User can add or remove tabs as they like but when they add or remove tab everything works fine except where the tab are it will show the new tab but does not clear the old tab text. tab is removed but you can see the old tab text there. I have tried GUIGraphicContext.form.Invalidate(true) but that did not do anything.

How do you clear the tabs?

Take a look at the screen shot.

thanks