I had to look up what "Gnome Mutter" is: https://en.wikipedia.org/wiki/Mutter_(software) > Mutter is a window manager initially designed and implemented for the X Window System, but then evolved to be a display server ("Wayland compositor"). It became the default window manager in GNOME 3, Gnome alienated some developers around the time of GTK 3, and there have sometimes been regressions, and some opinionated unconve…
GNOME is a perpetrator as well. I usually check the GNOME release notes (since I use GNOME on my NixOS laptop) and on a semi-regular basis there is a note that says: replaced app X by a completely new rewrite Y. And there is still no support for basic things like marking up/annotating a screenshot, even though the basic image viewer has been rewritten N times (anyone remember Electric Eyes?).