incorrect alignment when using multiple monitors

Question

Monitor 1: Philips PHL 246e9q (1920x1080)

Monitor 2: AOC 2369 (1920x1080)

As you can see in the picture, Bottom VLC window's alignment is way off. This is not a scale or resolution issue.

How can I fix this?

screenshot of the same scene

Answer 1

This is unbelievable! By default display arrange was like this

Then I saw this answer https://superuser.com/a/136391/510639 and changed it to this. I've always thought that setting was for just numbering monitors :)