Generally if things can get unblocked as you go, that's better, and so this isn't particularly common. But sometimes you need your manager to go kick down a door for you and it's a handy time to let him know. Sometimes it's more benign and it's just easier to ask the group in person when everyone's together sipping their coffee together than it is to fire off a bunch of Slack messages or a group email or whatever.

And to be clear, when I say "blocked" I'm not talking like "I can't get any work done until X", I'm more talking like "this particular avenue needs X to happen before I can continue it, so I'm shelving it for now and doing something else until we can get it resolved." If you find yourself in the former case, something has already gone horribly wrong that should probably have been resolved days ago.