I probably shouldn’t have upgraded, but did anyway 
Now, my scroll wheel just scrolls up/down in painfully slow increments instead of zooming in/out. This makes it very cumbersome to handle a 3mf with 20+ build plates. I’ve tried shift+scroll, ctrl+scroll, alt+scroll, win+scroll - nothing seems to work.
Anyone have any ideas?
Beta 2.8.3 fixes it
252525
Thanks… I installed the beta, but I lost all my printers and presets
I just rolled back to release 2.7.1.62
When you login to BS, a notification pops up to sync all your presets. Have you logged in after installation?
thank for the info but after a Beta messed me up in the past I try to stick to official releases, and guess what, the official release breaks things just like Beta does 
Same here and it’s driving me mad. Bambu can you fix this please! 
I just returned from a looong holiday abroad, and updated to the new version. Then failed to zoom the preview, and started to look for 20mins if there is a hidden option to change mouse wheel behavior back to the way it had worked before… the lack of success then brought me to this page.
Well, I really cannot complain about a lot of bugs in the past, as most updates went just fine and smooth. But in this case I’m really kind of curious how this fundamental defect could went unnoticed before rollout, as I ran into it after no more then 20 seconds of using the new version. Nobody ever did a single print preview before release?
The scroll wheel zoom bug did not affect all users but there were several reports on GitHub.
Issue #11892 has the most complete explanation and reports that the bug has been fixed in the current beta release.
Scroll to the bottom of the 2.8.3.66 release notes and open Assets for the installer.