When using BPP, press Add Custom to get the the Add Custom Frames dialog. Command+Tab to switch to another program to check email or something. Come back to PI and the Add Custom Frames dialog is hidden behind the main BPP window.
This is an inconvenience at worst. When you first see it, however, it seems like PI has locked up/crashed.
Is there a setting to tell PI how to manage these windows differently?
-Lloyd