Expeptions when closing a window

[akkiirah]

This message saying "Unhandled Expeption: Sequence contains no elements Continue without exiting" gets annoying pretty quickly.
When closing the last window that covers the entire screen and the desktop shows and I'd recieve this error.
Would it be possible to maybe add a setting in the config file to turn "debug Mode" or something like that to true, so the errors would show. With "debug Mode" false, they'd npt pop up.