When you do the tutorial area you get the messages that you can open chests using lockpick, I have don it befor but I was testing my my new party leyaut (have 2 people with Lone Wolf Talent which is OP) and I started lock picking at the same time I gotten the message which caused me to fail, after this I tried to open it again and I used all of the lockpick i could find and it didnt worked so I thought its just this chest which is broken. When I reached the city and bought myself identifying glass I found out that it's fail all the time ( I had 2 points in loremaster and the item needed 1) when i created newcharacter it worked but i lost my previous game and I menaged to repet this bugfew times which forbidden me from lockpicking or identifying items.