Mesmerized from out of LOS

[pisastrish]

PLATFORM and OS or BROWSER:
firefox webtiles

DCSS VERSION AND GAME INFORMATION:
0.33-a0-428-g648c01e

DESCRIPTION:
A siren mesmerized me while out of LOS. I don't think any displacement happened, and I don't think the faun swapped with the siren (but I'm not 100% sure of either). I was unable to move right, so it wasn't just a visual bug.

EXTRA FILES:
save (from a number of turns later): https://crawl.akrasiac.org/saves/pisaster-crawl-git-648c01eb48-241127-1831.tar.bz2