Picking up summoned and put to sleep with Pan Flute spiders cause game to crash.
1. Have any level spider den
2. Call out spiders with whistle
3. Put spiders to sleep with Pan Flute
4. "Pick up" spiders from ground.
They won't appear in inventory but take space, e.g. if you try to pick up more spiders, than the amount of free inventory slots, character will point out that there is no place in inventory. After that all actions and interactions with objects are not possible - animations play, but nothing happens (picking up objects, going to sleep, cooking, etc.). Shortly after server crashes.