/* means "comment starts here" to me. So now I instinctively feel the sidebar listing has commented out all my files. The fact it's an unterminated comment is blowing my syntax error fuses.

I can override it rationally but there's some serious cognitive dissonance going on. It's configurable, although that's in the bowels of ST3 not in the usual settings, and this won't really help for pair work. Not a great decision I feel.