Discover nags while watching video (Fedora KDE)

Hi all, first time posting here.

Installed Fedora KDE Plasma half a year ago on a Thinkpad mostly used in the living room - for streaming / playing videos and minimal gaming. Having zero regrets. It is amazing how far we've come.

I have had very little issues with it, all being only slight annoyances. Nothing compared to win10 or needless to say the current abomination from Microslop... which doesn't want to run on this laptop anyway.

So, here is the first annoyance: when watching a video with VLC, fullscreen, sometimes Discover (the app store / updater thingy) will pop up full screen, says "refreshing..." or whatever, clearly wanting to inform me of some brand new updates.

Question is, how to make it not bother me when a video is being watched?

It is not a big deal, I just immediately close it, rewind a bit and that's it. But if there is some setting to tweak or some magic words to type, I am interested...

PS. I am so happy about this move to Linux. Thank you Microslop for pushing me over.