Bug? PDF is scrolling to top when I zoom (CTRL + scroll) SOLVED

[nomis3000]

I have this weird behaviour where the PDF jumps through the pages until it reaches the title page when I zoom with the mouse wheel.
This behaviour started when I played around with the different view options. I am now back on "single page" with "show page gap" active.
I also restarted my computer and uninstalled + reinstalled the PDF XChange Editor. The issue persists.
I can see that the editor remembers some settings like preferred line colors in the comment tab. So my hopes are that this behaviour is just a weird setting.
Please help.

Version 9.4 build 364.0
Windows 10

[nomis3000]

Ok, I figured it out.
It happens in a PDF with A4 pages in portrait and landscape orientation.
While using the View settings:
- single Page
- Ribbon Layout

The Ribbon Layout part definitely causes this bug.
Going back to the Standard Layout and it works as it should

[Tracker Supp-Stefan]