Horde shaman totem quest has two versions. Those aren't marked exclusive(?) in Questie DB, so another keeps showing available on map forever even it is not available after player completes one. Issue reported on discord.

https://tbc.wowhead.com/quest=1518/call-of-earth

https://tbc.wowhead.com/quest=1521/call-of-earth

v6.8.2
TBC
Most likely issue is also on classic DB.