The back button's icon should be flipped to mirror the reversed UI; it is currently not flipped.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/587
Git commit 4e1496319b4c28c00c24f32040bc35267372c13d by Jan Blackquill. Committed on 21/01/2021 at 00:23. Pushed by ngraham into branch 'master'. [applets/systemtray]: Flip back button icon in RtL The back button needs to be reversed in order to make spatial sense in languages written right to left. M +1 -1 applets/systemtray/package/contents/ui/ExpandedRepresentation.qml https://invent.kde.org/plasma/plasma-workspace/commit/4e1496319b4c28c00c24f32040bc35267372c13d