Created attachment 144321 [details] 0001-gtk3-custom-GTK-properties-are-case-sensitive.patch GTK 3 specific CSS properties are case sensitive. Prettier in commit c18f2a472a654b648fb9e056f4c7c66d5e1bf786 made those properties lower case, thus breaking things. For example, scrollbars steppers. Find attached a patch to apply on top of breeze-gtk sources that fixes this issue (I wanted to open a MR, but I’m no allowed to do it) Thank’s!
Oops. Thanks for this! However you should be able to open a merge request. You just have to fork the repo on https://invent.kde.org (not GitHub), make a branch, push a commit with this change to your branch, and open the merge request. Instructions can be found at https://community.kde.org/Infrastructure/GitLab, and I'm available to help if you get stuck.
Ok I did not see the fork button, and my MR by mail was rejected. Should be ok now: https://invent.kde.org/plasma/breeze-gtk/-/merge_requests/34
Great!
Fixed by Guillaume Castagnino with https://invent.kde.org/plasma/breeze-gtk/-/commit/3785faebac7dc1541222a755e3070a8bddcc72d4 in Plasma 5.23.5!