1st Bug - Sent on a quest to kill something. I go to the cave. Upon my first step and a few times later while exploring the cave I get this:
My gamelog shows the creatures colliding with obstacles and then some falling into a deep chasm. Each of the three instances involves at least one Giant Mole being wounded, and they were not back to back. I wandered around and killed some gremlins in the cave between these events. IIRC mole dogs will tunnel around in fortress mode (never saw them before in Adv mode) so my uneducated guess is that when these ones tunnel through the ground their square no longer supports adjacent squares. That or I'm getting 'section of cavern collapsed' when I shouldn't be.
2nd bug: I create a new adventurer following the old one's death, hoping to out-wrestle the meanie that exploded me with his fist.
Despite having good starting stats in armor and shield use, I start with no armor or shield. I suspect this is because I started with no weapon skill, because this has never happened to me before.
EDIT: Fresh install, no mods, minor changes to the init file.
EDIT2: The giant or cyclops or whatever keeps exploding my adventurers, but every time I travel there with a new adventurer I keep getting the 'Section of the cavern has collapsed!' message. It also offcenters my view when I do this, but it recenters when I move right after.
EDIT3:
Bug 3 - Gave up on the titan who kept exploding people, decided to play an elf. Each time I enter an elf retreat, I get messages of elves losing hold of some of their equipment, falling over, and giving in to pain. It doesn't mention anything about people falling. However, I joined the group of elves who were at war with a goblin nation and they have wounds or missing limbs. I believe that the game is giving them full equipment and they just drop it because they don't have the body parts to carry it. They always seem to drop hand gloves or gauntlets, which makes my theory more plausible.
Bug 4 - I'm wrestling an elf guard at a Dark Fortress and when I joint lock and break his limbs I noticed that they are named weirdly in the list of current holds at the top, being called "wrista" and "handima", but I think this is because the guards name is being partially overlapped.