Pheace: Played 40+ hours and the only bug I've seen is the mousepointer disappearing on the map screen which is circumvented by going to inventory instead
I've played 33 hours so far (but only Act 1 as I've started 4 save slots, one for each character). I've not experienced the bug you mention there but I have had others:
A couple of misaligned textures (we can forgive those as it is a common issue with games)
One time I lost sound in-game, it crackled then went silent. Came back during the load screen on changing area but no in-game sound until I restarted the game.
I have had clipping issues, such as a stairwell out of the toilets, no matter how much I ran I couldn't get up the stairs, I just kept sliding back down (after about a minute I finally managed it up through a combination of sprint and jump).
I've had flashing objects and dead bodies on the plank textures at the beach.
I've had a weapon disappear as it was auto-dropped on switching with a weapon from a box, but it fell just under the floor so I couldn't pick it back up.
There is a thug in the "Make Yourself at Home" side-quest who doesn't attack back (done this twice and same both times).
And one time my keyboard stopped responding but I could still use the mouse. However, I think this is a legacy console issue as I eventually managed to recreate the issue by pressing the ~/# button on the keyboard and it toggled it.
Then there is the known issue whereby if you click to leave a menu (such as crafting, levelling up, inventory, etc) then you return to the game with an attack, which is not good if you are holding a grenade/molotov/bomb.
However, all of this said, I still love the game and they are all rather minor bugs anyway that may well get patched out in due course.