West Northwest Screen Bug

[mrozee]

I am getting the weirdest bug in dungeons now on more than one character. For example after logging a character into Unrest basement, after 10 to 15 minutes when my field of view goes through the west the northwest arc, my screen goes purple. Just tried it in the Warrens with a different character and this dungeon goes green screen through the same arc. Logging will temporarily clear it but it eventually comes back.

Has anyone experienced this bug and if so how did you fix it?