Changing to a monitor with a different aspect ratio makes buttons unclickable

This should be fixed in Unity 2019.4.12.
The next game update should include an update to use this Unity version (or greater).

Unity is tracking this issue here:
https://issuetracker.unity3d.com/issues/mouse-clicks-are-offset-when-using-a-specific-players-screen-aspect-ratio

@NathanMikeska thanks! I'm glad it got looked into, and I'm happy with my mod based workaround.

@sflanker Thanks for the extra info. I did a lot of digging into this today. The reason I was unable to reproduce it before is because it seems to only be an issue on MacOS and I was testing on Windows. I was able to reproduce it in a side project, so it definitely appears to be a Unity bug that was introduced somewhere between Unity 2019.2.3 and 2019.3.15. I submitted the bug report to Unity this evening. Hopefully its something they can address soon. Sorry about that...

@NathanMikeska to answer your questions specifically: yes it does mess up the main menu (see video); nope, the steps you outlined are all it takes.

In other news here is a mod that fixes the issue to my satisfaction 😅. It does this by detecting the discrepancy between current resolution and the supported resolutions list and picks the supported resolution with the width closest to the current resolution. This solution might not be universally ideal (maybe some people like seeing black bars?), and the reason the UI element hit boxes don't match reality may warrant more investigation. The mod includes a quick hack to reproduce the issue (there is a commented out line that manually sets the resolution to a 16:9 aspect ratio).

The resolutions I'm working with: external 3840x2160 (16:9), laptop 3584x2240 (16:10). I can also reproduce the issue by using Mission Control to move the SimpleRockets 2 window between my screens. Here's a video of the issue

I'm guessing this is related to the Unity update. I have tried to reproduce this issue with no luck. My laptop and monitor have the same native aspect ratio I believe, but I tried adjusting display resolutions via windows and bouncing back and forth between laptop screen and external monitor and could not get the buttons to mess up as you described. Is it messing up on the main menu? Any steps to reproduce other than launch it on the external screen, shut it down, unplug the screen, then launch it on the laptop screen?

I'm bummed @Jundroo shipped 0.9.40x without fixing this bug. It's pretty annoying to have to carefully click a few centimeters to the left or right of all the controls until I can change the resolution. I'll post a YouTube video demonstrating the issue, but I'm surprised if you weren't able to reproduce this.