I'm currently running the sims with the option "aura_delay=0.150" which causes the sim to model both the tick-munching bug and the tick-rolling bug, so it is currently not behaving as if it's been fixed.
There was a fix to Hot Streak yesterday that was causing it to have a chance to trigger on a single Scorch crit. Not currently aware of anything else that's going on, but I'll keep looking.
ETA: Are you looking at Hot Streaks from my output, or are you running the sim yourself? If running it yourself, are you building from the latest source in the repository, or from the release? If you're using last week's release, there are many fixes that have made since that you're not seeing in your results.
I guess I'm either confusing the issue by calling both behaviors munching or if the .150 is meant to handle the refresh lockout ignite loss then it's performing poorly at high crit frequency. There should be a condition in the sim that an ignite with a duration >4 seconds cannot be refreshed, and any crits that occur while ignites duration is >4 seconds generate 0 ignite damage. Its definitely alive and well on live servers and its a pretty dramatic effect even at this first tier stat level (you'd lose ~15-25+% of the ignite damage that you'd expect, worse in the cases where ffb & scorch see heavy usage, whereas last I checked I think the sim is reporting <5% loss).
As far as hot streak goes, I had been looking at your couple days old outputs but the most recent fix seems to have brought it mostly in line with what I'd been seeing/estimating.