It can’t save keyboard shortcuts. In the previous version of Audacity, I was used to using Shift+I for Fade In and Shift+O for Fade Out. When I open the settings, manually assign these shortcuts to the respective effects, and save the settings, they work for a while. However, after I save and close the project and then restart Audacity, the shortcuts are no longer saved, and I have to set them up again.
It’s really frustrating and seems like a bug…