Buildings cannot be ghosted, unless you actually place them

[TacticalMaster]

It's a visual bug. When in build mode, your new building will not be ghosted initially. But when you actually place that unghosted building then confirm it, then go back to build mode and selected that building that was not initially ghosted, it's ghost is finally there. It's a temporary workaround, and even lasts for the rest of the load import. But It would cut away this hassle if it was fixed right away.

[PoshOctavia]

that happens sometimes after a while, it also goes away if you restart the game.