Editor Move Tool jumping around

Do you have this Rama plugin enabled and can you try using this plugin in a new project to see if that could be the cause? I’ve never used his plugin so I’m not familiar with it. It’s sort of good that we’ve narrowed it down to only happening in your project. It means we can get an idea of what is causing it but it also means I likely won’t be able to reproduce it, which is bad.

I would also suggest making a copy of your project’s Config/Saved folder and then deleting the originals, in case something in the project settings is causing this.