Here are the desired answers to your 5 points for reporting a BUG
1. Problems zooming and panning a PDF
2. When opening several PDFs, zooming or scrolling in PDFs cannot be used because the program hangs and only responds again after a long time.
3. Problem on a Windows 10 PC and a Windows 11 PC (Both i7 - one 10.gen, one 11.gen - both at least 16GB DDR4)
4. Normal zooming with slight delays
5. hang up and no reaction for more than 30 seconds