Every time I've ever been aware of a Gnome update is because they changed something they shouldn't have at all or some update caused it to be buggy and slow. A lot of those were recent updates.
I hate how installing or removing (or even updating) a flatpak causes the whole software center to completely refresh, and it doesn't keep its state so if you were in the middle of a search or scrolled down through a category... say goodbye to it.