Vile Vultures disappear - HOW HAS THIS NOT BEEN FIXED YET?

Lost Towers: Vile Vulture spawns, enters the scene, then disappears for a few seconds and appears after it has landed on you and one-tapped you. This has happened more times than I care to count. Vultures disappear 90% of the time they spawn on towers.

HOW HAS THIS NOT BEEN FIXED YET??