Hey Fellfrosch!
Since i still did not flash sailfish and try to help with some android related things, can you please test something on the sailfish port?

On Android only one character key is recognized at a time.
Double keypress is only possible for the modifier keys and one char key to get the keys special function.
That is quite bad for gaming and some guys over at discord discuss if it is a bug (gaming) or a feature to help writing.

On sailfish, can you hold multiple keys and get all consequent results?
Like press a, hold a then press b additionally and b would be recognised?
Or hold spacebar and get any other key to work while spacebar is held?

My feeling is on android double key press i hinderd on purpose for some reason. That's why it would interest me if the porters did something differently in sailfish.
Thanks for your time!