Flatpak Runner with Finnish is now released as well (only change in updated version).

Re GPU composing: glitches on my phone were some, not too many. But I preferred to release without them.

Re scaling/DPI: there seem to be some kind of cut-off DPI setting at which you have a feeling that WebEngine is going `ooh, its so high, we better blow up all the characters!!!` mode. So, its quite possible that there are some sweet spots in its settings.

Re home folder: its for downloads as well, those go to ~/Downloads. But feel free to disable.