Very weird. I would look at the applications folder and see how many copies of the 'Arduino IDE.app' there is, then do a GetInfo. Long shot, reboot in case there is an instance of the app running somewhere.
Based on this thread I deleted a number of log files. This may have started then but I can't say for sure.
MIght the 'applications folder' go by a different name on my machine? I'm not really conversant with the files in the 3-OS (C:) directory, as its named on my drive.
Wow, you need to understand that and a ton more before ever thinking of doing programming. I don't know how to answer, it's basic knowledge. Here is what my finder screen looks like but I probably modified it.
I share @sonofcy's hypothesis that you have two installations of Arduino IDE on your computer. So the problem is not that Arduino IDE "reverts", but rather that you are starting the Arduino IDE 2.0.2 installation instead of the Arduino IDE 2.3.3 installation.
How are you starting Arduino IDE? Are you using a shortcut, or just double clicking on the Arduino IDE.exe file in Windows File Explorer?