Ghosted building appearing after decaying and the player having vision over it

When a constructor or a commander stops building a building and the building is left to decay completely the building will be permenantly ghosted. The ghost will be visible even after getting vision over it.

The way I am able to reproduce this is to play against the simple defender AI and send a tick near a constructor. The constructor will abandon the building to reclaim the tick.

Probably a problem updating UnitDrawerData

Reproduce the issue against the simple defender AI by sending a tick near a constructor and letting the abandoned building decay completely. Start by tracing the UnitDrawerData update path for the decaying building and its visibility state. Done means the ghost no longer remains visible after the player gains vision over the location.

Written by the indexing model from the issue text.