Fixed, and live now. Thanks for the screenshots, they pinned it to Forest of Dead Trees I in El Nath. Two separate bugs. (1) The fumes: in v83 those gas vents really do stun, but only for the short puff at the start of each cycle (about half a second). Then they go quiet for 30 seconds, or 10 minutes for the one by the bridge. Our version treated the vent as dangerous the whole time, so the 5-second stun outlasted your post-hit invincibility and caught you again, forever. Traps now only hurt on the frames the game data marks as dangerous. That also fixes other always-on traps across the game: lasers, falling stones, icicles, the other steam vents. (2) The bridge: both ends of that arch have a second, lower floor piece forking off right where the bridge starts. Our movement grabbed the lower piece, which runs off the edge, so you dropped into the pit. Walking now follows the floor you're actually on, the way the real client does, which also fixes the same fork on other maps. Please re-test both on that map.