Ubisoft, you may want to stop people from doing this in The Division

UPDATE: Reddit users suggest there is a workaround - by persevering with a griefer and running on the spot. After a few seconds you will phase through them and continue on. What you shouldn’t do is keep pushing and backing up to try and squeeze around the griefer - as this will continue to block your way past. Even within the first safehouse, The Division may have a bit of a griefing problem to contend with. Watch out for doorways! Subscribe to Eurogamer -