My kids are learning Blender on Udemy. One of them got started before the other and ended-up with v2.81. The other ended-up starting later and installed 2.83. He couldn't find buttons and certain functions didn't work as per the course he was following. He ended-up installing 2.81 to be able to get on with it.

I didn't dig into it so I don't know what the issues were. I seem to remember that object scaling wasn't behaving as it used to. We had two laptops side-by-side with 2.81 vs. 2.83 and they didn't do the same things. Not sure if this is normal with Blender minor version changes. Like I said, going back to 2.81 dealt with the issue, so no big deal.