Bug/Issue Can't get game to work on second monitor

Hi there,

I recently bought a second copy of Stardew Valley that I use on my 13-inch MacBook Pro 2011. The game works perfectly on the laptop itself, but when I try to use it on a thunderbolt display I have connected, I run into a multitude of issues.

The first being that I cannot change the dimensions of the game window without it moving back to my laptop's native screen.

Secondly, if I attempt to play in windowed mode, my cursor will go halfway up the screen before appearing on my desktop as if I clicked out of the game. I have this issue with fullscreen mode as well.

Third, I am not able to change the resolution of the screen whilst in-game in an attempt to fix this issue. The native resolution of my external monitor is 2560x1440.

Is there any fix to this solution? Am I overlooking something obvious? Is it a bug?

 

I have the same problem. someone pls help