4.6 UI shifts in final build (on PC only)

Here is what my title screen, made using 4.6 UI, looks like on my Mac (in the editor, web, and native build)

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Here is a screen of what it looks like when run on Windows (web, native)

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It looks as if the center is given to the bottom corner…

Does anybody have any idea why this might be? And only on Windows…! (I’m developing on a Mac).

Some info:

Canvas Scaler was set to “Constant Pixel Size”. Then I tried “Scale with screen size”. Same issue on both.

RenderMode is “ScreenSpace - Overlay”.

I was on 4.6.0, then upgraded to 4.6.3. Same issue.

Any reason why this might be, what causes it, etc? It’s so damn strange and baffling. Any help is appreciated!

Switching the RenderMode to “ScreenSpace - Camera” makes this no longer an issue.

Perhaps the “ScreenSpace - Overlay” has some un-ironed bugs to do with positioning / anchors / pivots, or something.

From what I can tell there is little difference between “ScreenSpace - Camera” and “ScreenSpace - Overlay”. Since that is the case, I will always default to using a camera setup with my UI’s.

If there are any notable differences between these rendermodes please feel free to make a comment, that would be very helpful and appreciated!

I fixed it by adding a camera to the scene. I noticed it was the only difference from the scenes where this problem didn’t happen.