Manually setting activation delays does work indeed.
Is there a reason though, why registering key-presses is handled differently in the game compared to the settings menu?

When I do Ctrl_DOWN, F_DOWN, F_UP, Ctrl_UP on a Keyboard, in the settings menu, the binding is registered on F_UP.
While ...

I mainly play on my Steam Deck and modified the official control scheme for my needs, such that I also have a shortcut for green wires for example.
I configured a button on the deck to send Alt + G, but when I try to bind it ingame in the control settings, Factorio only registers Alt.
When I plug in ...