After Closing Client Small Window With Doomsday Icon Pops Up

So here’s a bit of a weird thing. I’m not actually sure if this is an Eve thing but at the very least I want to rule that out before I go digging deeper. I’m running Windows 10 Pro Version 2004.

Twice over the course of the day today, shortly after closing my Eve client I noticed a tiny window appear in the bottom left corner of my screen, just above the start button - no content just a white taskbar with the standard minimize/maximize/close buttons, and the icon of a titan doomsday. As soon as I hover over it, it immediately disappears, and now I can’t replicate it or find any evidence of its existence in task manager or event viewer.

So basically what I’d like to know is if this is something the Eve Client actually does, and if so what caused it and do I need to do anything in response to it?

I wouldn’t sweat it if it only happened once.