Sorrow Among Stones quest: Follow Lachlann

Hi,

Got the 2 keys, the quest updated to Follow Lachlann. He walked a bit and started talking, but I saw my inventory was full so I portaled to town.

When I came back, he was just standing in front of a grave, nothing happens.

Exited to login screen, came back to him and he reactivated instantly / fight happened.

It doesn't work for me, he's just standing there no matter what i try

same here