Barnacled rune lost in deep water - is this a bug?

[Turgon]

In my recent game, a TrFi of Oka, I saw the barnacled rune in shoals:5, but then the room was flooded with deep water, obviously by a spell. I killed the enemies (including ilsuiw), but the deep water remained in the room. I stayed there for ~ 2 k turns hoping for a withdrawal of the water, but nothing happened. Went to Shoals:3 and returned - still deep water.

I asked in ##crawl for help, maybe converting to Fedhas could have helped. Well, I quit the game in the meantime.

If this is a bug please fix it.

[Kate]

That would be a bug and should be reported on Mantis, yes. If it happens again, please backup the save before quitting, it might help debugging it.