Confirmed - cause found, patch not written yet.

Bots are positioned by asking for the ground height at their x, with no wall check, so walking into a wall pops them straight onto the ledge above it.

Moving it out of OPEN so the list reflects reality: this one is pinned down to exact files and lines, so what is left is writing and testing the change, not working out what is wrong.

Fixed in bd97779d.

Cause: a bot's height was never simulated, it was assigned - every frame it was placed at 'the lowest surface anywhere in this column', which has no notion of a wall. Sideways, the bot was free to roam its anchor point plus or minus 180px with nothing but the camera bounds stopping it. The player already walks by the right rule: you cross linked floor segments, and a linked segment whose two ends share an x is a WALL that stops you.

So a bot that wandered into a wall simply appeared on whatever floor lay on the far side of it. Lith Harbor links a floor to three stacked walls at x=2218 and out again to the next floor: the ground goes from 647 to 527 across five pixels of travel, a 120px pop. Henesys has the same shape at x=938, a 60px step.

Fix: bots are bound at spawn to the connected floor strip they are standing on, using the same walk the player's own wall and edge checks already use - so a wall now ENDS the patrol instead of being walked through. Across all 18 bot maps the strips have no internal gaps, so no bot lost its patrol.

Retest: watch the bots near the walls in Lith Harbor and Henesys.