Completed the last part of the quest A Plague Upon Thee in Western Plaguelands were you have to release the termites from the barrel. However once that part is completed, the quest continues to show on my map, even after a UI reload and a complete restart of the game.

Questie Version : 5.0.1 2 e2e80b7

This will be fixed in the next release. Thanks for the report.
12623ce