Rifts near the Sighs issue

Having same problem in emerald graves with rift of sisghs with different rift. Pretty sure i have done the rift but the quest marker is still showing on my map. when i go to the location there is no rift there.

Bump!

Instead of making a new thread I thought I might aswell bump this one up and add that I am also having this issue in the exact same spot as the OP. The horrible part is I tried to reload and it happened again and again.

I've just ignored it and kept going on playing now instead of restarting for one error, but I really hope this wont come back to bite me in the * as its not my fault, its the game breaking -.-