I run VS2013 Professional on Windows 7 x64 and often find that after a debugging session the yellow tooltips from the debugger do not disappear and remain on the screen on top of other windows. For example, an attached image shows a debug tooltip that now also appears on top of me, posting this question.

I can temporarily hide it by pressing Win+ dto show the desktop, but as soon as I open / go to any window, the tooltip will return.
The only way to get rid of these tooltips is to close and reopen my Visual Studio. Any thoughts on what else I could do?