You do realize of course that "start a new playthrough" and "find a save 100 hours before the bug appeared" are not a solution right?
I mean I dont consider throwing 100s of hours of progress down the drain a "solution" to begin with. It is ridiculous to even remotely claim it... "hey we solved the problem, you just have to replay 200hours of this game, thank you very much and have a nice day!"...
As if it is rocket science to solve the problem PROPERLY for everyone, without requiring a restart...