The change blew my mind.
/* means comment starts here to me. So now I instinctively feel like the project drawer 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 in the meantime. I'm finding it impossible to look at the file listing without being instantly distracted from the task at hand. It's a productivity killer.
For me, this couldn't have been a worse choice of generic source code icon. I took a look at "A File Icon" but it's a load more visual noise that is unwelcome again.
Please make the file icon an easily changed setting, otherwise I'm forced to abandon ST3.