If user changes the standalone Player's aspect ratio in Exclusive Fullscreen mode, the cursor will have an offset from its "actual" position in the screen. The most direct effect is all UI cannot be clicked on.

Repro:
1. Build & run the Player from the project.
2. Switch to Exclusive Fullscreen mode if the Player is not in that mode.
3. Change resolution to one with a different aspect ratio. For example, if the Player is in 1920 x 1080, change it to 1920 x 1200 or 1024 x 768.
4. Interact with the UI elements.

Project download: https://oc.unity3d.com/index.php/s/b67c5oh65wUg7zl