Drakton

Hello. I have the Broken Blade Quest, which means I've found the first piece of the blade that triggers the quest. I remember talking to Dunstan about that. However, now that I have the remaining 3 pieces, I don't have now that first piece in my quest inventory, and Dunstan has no dialog option to reforge the sword. Quest items can not be sold or moved so I'm sure I did not sell it mistakenly. The xaurips tent is empty. I visited a second time just to be sure. I'm sure this is a bug. What can be done about it?