Hi I'm having an issue with several of my dwarves dying of thirst.
This is inspite the fact that I am well-stocked with drinks and have two active wells as a backup.
I've checked the usual suspects, and can confirm for sure that the usual problems of madness/forbidding the drinks/burrows/locked doors are not the cause of the issue.
In fact I've observed what seems to be the issue:
After four of my dwarves dying mysteriously of thirst despite having uncompromised access to food and drink, I decided to observe some of my dwarves running around on the Habitation layer of the fort. I noticed one of my dwarves was flashing Hunger and Thirst and took a look at him. He was starving and thirsty, but he had an active Drink job and a rock mug in his hand, so I assumed he would take care of himself. However, upon following the Dwarf, I noticed that he was just running around randomly - into rooms, temples, the tavern/meeting hall, the food/drink stockpile, but never actually grabbing a drink (despite on several occasions being directly on top of barrles of wine and other drinks). He's just running around.
I've tried making a burrow on the food/drink stockpile and assigning him to it, but he won't cancel his Drink task to go to the burrow.
I even made a military squad and ordered him to move to the stockpile. No effect. At this point in time, he is still running around, now Starving and Dehydrated.
Has anybody else experienced this? Is it a bug?
I have a hypotheses (noted below) as for potential causes of the issue, but I'd like to hear some suggestions for solutions before I unpause the game and test my own hypotheses, as the testing will disrupt my fort's logistics, and most likely claim the life of at least this dwarf, and probably several more, if the tests do not resolve the issue.
Current hypotheses are:
Dwarf, for some reason, does not like drinking out of a mug, if the fort's drinking establishment is not a Tavern.
The stockpile is part of a chain of food stockpiles (this one being an end-node which only accepts edible food and drink). Dwarf may be constantly switching targets for his drinking. However, he's never moved towards the stockpiles further up the chain, so I doubt it.
The mug shows in his inventory as hauled, so maybe he is stuck in indecision between using the mug to drink and putting the mug in an appropriate storage. However, he's never moved towards one of the appropriate mug storages either. I will note that my goods stockpile is only quarter-full, and the coffers in my meeting hall are empty.