black line in slow
I think you mean “snow” huh? Hehe, anyhow bugs like these would be better to be posted in art map issues thread, that’s sticked in this forum: https://forum-en.gw2archive.eu/forum/support/bugs/Stuck-in-the-map-or-seeing-map-art-issues However I believe it’s just a glitch. I have seen those happening but they go away as you approach the area. But if it’s persistent so it may be a bug yes.