I tried to explain what I think is wrong with the trim implementation in this topic. As far as I’m aware there’s no technical reason why holding a key must behave like it does when typing, and it certainly should do the same when using a button. This is just the way Asobo chose to do it, with apparently very little considereation for its functionality.
Realise the graph in the following post misses the pause which @LostScArLeTt correctly identifies.
I saw that A2A had done something regarding the Comanche’s trim input, but haven’t got round to checking that out yet.