As far as i can tell on beta there is next to no munching.
So they fixed the issue where ignite fails to recognize fire spell crits registered when ignite's duration is over 4 seconds? That's the way it is on live, and it is frustrating as hell because you'll land a huge pyro crit and expect a decent ignite for combustion, but it'll wind up being piddly because a living bomb tick crit a millisecond before, refreshed ignite to over 4 seconds, and caused that pyro to not be added to the bank.
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