Of course, crashes and bugs can happen when applying quickfixes, which isn't nice. Ideally, they should be reported and fixed. You can also ask an agent to fix the occurences instead of using the IDE quickfixes if that's blocking you.
I guess what I'm trying to say is that IDEs shouldn't make that process harder, they can actually improve agents' results. For example, you don't need to write custom skills to prevent agents from writing some class of bugs if the IDE can detect it and agents have access to the results.
> Changing 200K+ lines of code yourself is a nightmare (and to prove it still does the same thing afterwards).
If an agent does it, you still have no proof, but okay.
Full disclosure, I work at JetBrains, but not in the IDE department.