2018.4.4 UI Robot Tray keeps prompting installing packages

Oh no… alrightie noted and sorry to hear that. I also saw this post below, but have yet to try it out yet.

If you’re using Enterprise version and want to go back to 2018.3, I think you’d have to raise a request it from the technical support team.
Otherwise, if you’re using Community Edition, there is no way to roll back unless it has already been installed on your PC previously.