Loosing display of local variables

Sometimes while debugging if I switch to an other application than QtCreator I loose the display of the local variables.

Steps:

1. Lauch an application compiled with CL in debug mode (CDB)
2. Break somewhere
3. Expand some variables
4. Click on Notepad++ Window (located on second screen). It should be the same with an other application taking the focus
5. Go back in QtCreator, all variables in the local view disappeared

I have to change the selected function in the call stack, tu be able to get the variables view right again.

PS : I didn't verify if is it an issue specific with CDB or not