World generated in 39e. To embark I used the Nanofortress utility, but I don't think it caused this.
2x1 oceanside glacier fortress. The gimmick is not digging out any square at all, so I manufactured frozen water by pumping the ocean on the glacier and built aboveground. After expanding the pumping operation and trying it out two squares in the pumping system are bugged - can't be crossed by dwarves, one of them shows a water stone, the other shows something weird. Looking at squares with k shows nothing.
Squares are marked by notes, save
here. Seasonal older autosaves before the glitch available.
Other notes:
1) Screw pumps desalinate water. I consider this a bug.
2) Minor thing - saltwater can't be used as a water source even if all I want is to make a saltwater pool.
3) Minor thing - frozen water creates ice walls, but dug out stones are called water.
4) Minor thing - water stones sink to bottom of ocean and don't melt.
5) If ocean is paved over and walled around it still shows waves traveling over the floor.
edit:
6) Small animals (squirrels, lizards) don't die from cold while merchants bring them to cold climates, but normal animals do.
7) Minor thing - corpses are too cheap. Asking traders for pets and buying their frozen corpses is almost an exploit. They cost nothing and give food, bones and skulls.
edit2: Playing on, two more weird things happened.
One is probably intended: sometimes, after working for a while, a workshop built of water will spontaneously disappear. It's probably melting because it's too warm, but what decides whether it melts?
Second thing: a dwarf is wounded. I designate a pool as a water source. It's a valid water source. Dwarf picks up bucket, goes to water source, water level goes down. Dwarf has no water in bucket, but still goes to the wounded dwarf. The non-existant water is not given, wounded dwarf is still thirsty, healthcare dwarf returns to pool. Save available.
The post is already much too long, but it seems my fortress will not get any artifacts ever, as it technically hasn't dug anything (uncovered an subterranean tile). Maybe formula for starting strange moods needs to be tweaked?