Hello. First of all, I'm not really sure if it's a bug or not, so feel free to move this post, or just leave me a link to the appropriate place, and I'll post it there.
I'm using GZDoom v4.5.0.
There is a Misc. option called "Show Tally Screen on Level Exit" and it's usually on Mod Defined by default.
I like to see my tally screens on levels like E1M8 or E2M8 for example.
This option resets every time I close GZDoom, and I have to set it back whenever I open it again.
I've read that this option might be problematic for some mods, and maybe that's why it resets on close, but just in case it's not intended, I'll leave this here.