On my Steamdeck controls I set R4 to a command Ctrl with a subcommand F. When I then go to Interfaces and try to set "Focus search" to "Ctrl + F" by pushing R4 it only picks up "Left Control" as the shortcut.

If I change my steam controls to make R4 execute two commands Ctrl and F, then I can set ...

This resolved after resetting my controls in game. Another strange symptom is that I could push the "f" key when in chat mode.

I noticed that in 2.1.8 the right and left bumper keys tend to stick more than stable. I notice they stick typically when using key combinations to enter chat mode or map mode. The only way to unstick the keys is by pressing the Steam button.

The main symptom is that I will be press other keys the ...

If there's one big thing I'd like re: communication, its for Wube to explain what the intention for Factorio is, and explain design decisions, and do a post mortem about the design. Because you're asking for feedback, but from what I see you don't care at all about feedback and are just doing what ...