Did you managed to fix this?
I'm having the same issue as well. My last build was on 23-24th May and it was okay. I tried it today via Xcode and status bar wasn't hidden despite being checked.
What I remembered was, if you had status bar checked when you export from C3, the status bar option in Xcode should be automatically checked as well, but it doesn't seems to be that way this time round.
But even when I try to up another version and checked it manually, the status bar isn't hiding.