To reproduce,
- Set zoom level to anything but default, e.g. by choosing “Zoom In” from the menu
- Click on “Decks”, or choose a deck, or do a few reviews, etc. Observe that zoom level is reset.
Anki 2.1.52 (ab1c2395), opened with Shift pressed,
Python 3.9.7 Qt 6.3.0 PyQt 6.3.0
Windows 10 21H2