ALT Key messes up focus?

When I play in Editor in a new Window,

The Left Alt Key (Windows 10), is mapped to an input Action.
In conjunction with WASD movement, it messes up the input.

The S key won’t react to presses anymore and when I exit, it switched the “Play in XYZ” Button to Simulate.

Hello Raildex_,

After reading over your description, it sounds like this is working as intended. You you press Alt+S while in the editor this will start Simulate mode. This is a shortcut that is setup by default. If you would like to change this, you can do so in the project settings. I hope that this information helps.

Make it a great day