Yeah, I've been through that recently as well. The fix for now was to temporarily switch to .NET 8, apply a code fix that adds the inherited nullable annotation

Yeah, I've been through that recently as well. The fix for now was to temporarily switch to .NET 8, apply a code fix that adds the inherited nullable annotations throughout the whole solution and revert back to .NET Framework 4.8. This shouldn't be a problem when multi-targeting, but we've opted to not use that for now for other reasons (performance in Rider, mostly).