Lost-brain: The cursor do not detect the loot, as it was part of the scenery. So, I can't take it as well. I can activate the chest, though. And "fast loot" touch (Q by default) is the only way to take a little part of the loot (Gold and potions essentiallly).
Is someone as the same problem ? It is a bug, or there is something I have missed ?
Sounds familiar - could you press Alt key and see if it helps? And verify in your controls settings that you have Alt key bound to display loot (there are three loot options I think - all, filter broken and filter ?something? - default Alt, 'Z' and 'X'). All three keys behave like a toggle if you choose it in game settings menu, otherwise only while holding them. BTW I had autoloot bound to 'A' in clean installation and completely unbound in another installation where it imported settings from original release.
Edit: I just checked and the above applies - I can loot fine in GOG-4, all I have to do it hold one of the loot keys.