Strange Language Bug?

When joining a watchroom that has a different language set as it’s default, it changed mine to it as well, even when I exited the room. It’s easy enough to fix back to English, but it seems strange enough to mention.

Set languages should only change one’s interface for when they’re in the room, no?

Once again, it’s easy to fix on one’s own, it just feels like a problem that shouldn’t be in the first place?