Both of those are from over a year ago? For future, I wouldn't think that's "top" of any discussion.

The strange font sizes and setting reset was mostly fixed as part of the 2020 massive refactor [0]. There are still some minor inconsistencies between the two font editor panels, but they're being worked on.

Thankfully, you shouldn't have any random setting changes since about 2018 build.

[0] https://gitlab.gnome.org/GNOME/gimp/-/issues/344