Browsing pages using Command+Page Up/Down or Fn+Shift+Arrow Up/Down shifts page slightly left and down. Infuriating when trying to see if elements are properly aligned between pages. The rulers seem to shift as well.

I'm using Indesign CC 2018 version 13.1

My document size is 4k 3840 x 2160 px. When my doc is 1920 x 1080 px the page shifting does NOT happen.

Any ideas why this is happening and how to fix it?