The Roofs at KBOS are still floating up in the air. Based on the jetways, this might be more an issue with the terminal building heights rather than the altitude of the roof. This started with SU5 and persists past today’s hotfix:
A post was merged into an existing topic: SU5 Airports missing terminal walls/floating roofs
It is always best to search for existing topics before posting new bug reports. I have moved your post into an existing topic for this issue.