Second Monitor with Different Resolution

I installed Linux Mint Cinnamon on my laptop about a year ago and it works almost flawlessly. The only issue I have is when I'm using a second display with a different resolution at work.

My laptop has a 2160x1440 (3:2) resolution, but the second monitor has 1920x1080 (16:9).

Some apps, such as Firefox, work fine on either monitor. Others, such as Jamovi, have scaling issues so I need to keep them on my primary monitor to see the whole page. But some, like Zoltero, can go full screen on my second monitor but it's an awkward process to do so (make it full screen on my primary screen, then drag it to the second monitor. Sometimes it works, but I usually have to repeat the process multiple times).

This doesn't really affect me in any way other than being slightly annoying.

I'm curious if anyone has any suggestions to sort this?