When you put the mouse over a variable or a procedure name the tooltip appears with it's definition. The tooltip appears not immediately but after ~0.5 sec.
If you have lots of windows (15+) opened, if your mouse appeared to be over a variable or a procedure call and you alt-tab then the tooltip appears upon (on,over not sure wich one is the right one) the application you switched to.
[Linked Image]
The only way to get rid of this is to alt-tab back to the developer, move the mouse to the free spot an alt-tab back againg. That's annoying.
