Weakauras lingering on screen

[Sre]

Currently working on my UI, I've been making class specific targeting weak auras that only appear when I target a specific class, and have noticed that even when I deselect a target sometimes the weakaura lingers until I target a different class. Any ideas as to why this is occurring?

[SpaceDuck]

i believe there is a separate event for when you un-target something which you will need to track to hide your WA