Normally, Podium changes to a different Editor Profile when you delete the one that’s currently in use – but it seems it doesn’t do this with editor windows that are open but not visible, i.e. on another virtual screen.
Happens with sequence profiles, too, and doesn’t crash when the profile is only renamed.
Example:
Open New Project Window – assign any Editor Profile to it – close it or switch to a different virtual screen – delete the profile in use – switch back to the now profile-less Project Window!