Patch 1.07.
You still CAN drag and drop an oil on a sword during a battle.
You can't get a feather from a monster's feather by disassembling it (there is no way to disassemble a monster's feather, it is not shown in a list of things that can be disassembled).
If you're on a boat and you use igni on a siren, she falls in the water, doesn't move and burns forever.
From time to time when you're fighting sirens while on a boat, the game "teleports" you from your boat to 20-30 meters up and you fall from that height to the sea
(actually there are more bugs you can catch while you're on a boat, I don't remember the others I've caught).
---------- Updated at 09:28 PM ----------
And also there is no way to adjust mouse sensitivity in the game settings menu. I've had to fix the profile to get to that setting.
---------- Updated at 09:29 PM ----------
And guys, thank you SO MUCH for implementing this alternative scheme of movement for Geralt! It is awesome!! Really!