I noticed that happening only when I have the rocket.chat electron app running. I can't tell if it's more widespread or not. In any case this application seems to be doing something our global menu facilities don't expect. When I have it running after a few switch between windows, plasmashell then eats up 100% cpu until I quit it. On the standard error I see the following output repeated infinitely at a very fast pace: Unhandled property update "children-display"
https://github.com/electron/electron/issues/8455
Still, shouldn't such a central facility defend itself from getting in such a mess than eating 100% CPU because of a buggy application? For sure more buggy applications and more applications on older revisions of Electron exist.
„Bundle everything, they said, it's the future, they said“. I have never seen any app exhibit this other than Electron-based ones so I'm not going to spend time working around their broken stack or eco system, if I had, they would have never fixed this in the first place. (Patches welcome of course)
Fair enough, I'd have expected more than just the bloody electron app having this nasty "spam notification" issue. If it's just them it's likely OK indeed.