So it’s easy to reproduce. new Player Controler. Add this
I get this output when I: press and release “Space” - hold down “Alt” - press and release “Space”
It seems like the Pressed event does not fire for the space bar when “left Alt” is pressed … there are no key events defined in the project setup that could interfere with this… what is happening?
bump … is there a dev arround? I don’t think this question is stupid enough to be ignored. ^^
bump… any dev… PLEASE
Replacing answer given the addition of information. I can reproduce the problem.
Alt+Space is a special snowflake on windows. It’s the global key command that helps you reach the Window options (like move, minimize, maximize, close, etc). This is great to have when you can’t use a mouse. Not so great when you’re playing a game. This means more work needs to be done to get around that (plenty of other games do it, but others emit the same problem).
I leaned toward this being a bug in UE. Confirmed that similar behavior happens in Unreal Tournament (can’t crouch with Alt and jump). Jumped into Overwatch and they handle it just fine.
it’s not the alt key that does not work. it’s the combination of a PRESSED alt key and the space bar… my caracter can’t crouch jump when crouch is on alt… it works perfectly fine when crouch is on ctrl… i’m running 4.12.3… still there.
It’s my own crouch not the built in version… but as I showed, the issue is not the crouch function itself cuz it does not work on a blank blueprint in a blank project.
FYI – you can reply to comments/answers instead of leaving brand new answers
Revised my answer above. Thanks for the details.
yeah… okay… ^^ thx … I’m usefull yeeiii 
Me too, I hope! I’ll take an up vote <3 
Any progress on the issue?
Running into the same problem, and I’m extremely disappointed that it seems I’m going to need to jump through hoops to set up a control scheme that works for my game.
If anyone has any way to get around this I’d greatly appreciate it. I know requiring a player to press alt and spacebar is less than idea anyhoo, but it’s probably the best I’d be able to do with my game.
