Finally, I encountered a bug:
It' the quest "A new Home". In this quest I have to do the house renovation. I finished the last task, added 5 iron bars to the oven. So everything should be done now. The house is built outside, kitchen is finished, the bathroom, the bed, the candles... everything. Actually, I should be done by now.
Instead it says, quote: "For now everything is done. Talk to Roderic to get furniture for the house."
But with Roderic i have no more options because i already have everything. Did anyone encounter this bug before ? And maybe is there a solution already?