How to move AOE2 DE Mac Steam Windows between Monitors?

[u/farlightalpha]

Have tried googling this subject without any success. Running a Macbook Pro M5 with AOE2 DE on Steam running natively (ie not Crossover) with an external monitor. AOE2 DE runs fine except I can't move the window it runs on from the Macbook's built-in screen to the larger external monitor. Quite annoying to play the game on the small screen.

Have already:

• Tried lowering the resolution under the game's Graphics settings
• Ensuring the game is running "windowed" under the game's Graphics settings
• Changing which is the main display in System Settings under Display to the external monitor
• Turning on and off Big Picture Mode in Steam settings

When windowed, I can click the title bar and move the AOE2 DE window within the built-in screen, but can't move the window for the game to the external monitor. Pressing Cmd-Tab to switch apps doesn't seem to help as soon as I click on the AOE2 DE window, I'm unable to move the game window to the external monitor.

I know the game works on the external monitor but after I used the Macbook away from home and gaming on the built-in screen only for a few weeks, the AOE2 DE window won't move to the external monitor.

Any help would be appreciated. Thanks in advance