I have a two monitor setup running off my MacBook Pro (8,2). External monitor is set as the primary display (menu bar on top), while the built-in display has the dock. Minecraft crashes every time I join a server and press esc, inventory, or any other action that would release the mouse. Issue does not occur when I disconnect the second monitor and use only the built-in one.

Let me know if you need any more information!

Did my best to ensure that this isn't a duplicate, but I may have very well missed something, so sorry if I did.