It's jagex you can't expect them to make an update without some sort of bug happening. I'm just glad they have introduced something to stop all of the auto typers.
lol I was messing around with java and made a script that instantly repeats whatever is said (If someone says hi, the bot will instantly say hi) and I took it to world 1. It was muted within a second of being there. No macro ban tho
But yeah, I think auto typing is only bannable if you are a repeat offender. And even then, you might only get a perm mute.