Issue:
When changing the window size the resolution drop-down doesn't immediately update to show the new resolution.
For it to update you have to go to a different Settings page and back.
Reproduction Steps:
  1. Open the Graphic Settings
  2. Change the window size
If you do this you will notice that the resolution shown has not updated.
Expected Behaviour:
After changing the window size the resolution shown should immediately update to show the new resolution.
Attachments:
Here is a video showcasing the issue: