alt+space shortcut

Hi,

Why doesn’t Alt+Space key combination work in Unreal and what work arounds do you suggest?

Thanks,

Alick

Steps to Reproduce

(In Windows) inputs bound to space don’t work if alt is held

Hello [mention removed]​,

Alt+Space is a Windows reserved system shortcut that opens the window’s control menu. This behavior takes precedence over anything Unreal or any app tries to assign to that combination.

If your system has the PowerToys tool enabled, this shortcut may also be mapped to launch the PowerToys Run command.

Due to this limitation, the engine cannot receive the shortcut reliably. The safest workaround would be to use a different key combination.

You can remap the Alt+Space shortcut using tools like PowerTools Keyboard Manager or AutoHotkey but this doesn’t allow Unreal to directly process the original key combination. Instead, you’re simply intercepting it and simulating a different input. The exact Alt+Space keys will still not reach the engine due to how Windows handles them at the system level.

Please let me know if this information helps.

Best,

Francisco