I can confirm that this bug still exists. I have no idea how I triggered it, but it happened in the map editor.

Output log:
output_log.txt

Multiplayer prop bug happened again.

Client output log:

output_log.txt

Found a new variant of the prop bug:

In the map editor, start off with a room

Next starting building a room on top of it:

Complete all but one tile:

Now place the last tile:

This stays glitched even in skirmish mode.

Here is a map I used to create it:

garrison test_76561198271056091

garrison test_76561198271056091.meta

Here is a save file:

garrison test_20171109153553

garrison test_20171109153553.meta

Output logs:

output_log.txt

output_log.txt

Not sure if it is related but here is a prop bug I encountered midgame in version 1.6.4:

Output log (as a client):

output_log.txt

If I remember correctly, the narrator simply says 'minion' rather than the name/type of unit. At least, I believe that this was the case when I reproduced the message with Bohser. I may be mistaken though.

Heh, I see. Thanks and good to know.

...So just to clarify, the times when it is 'missing' is when it is actually trying to perform a debuff attack? What exactly is the debuff, and is it shared with frost weavers and magma weavers? I noticed that it performs the attack even against defences...I am not sure if it is possible, but the idea of debuffing a defence seems silly, especially if it is only 'slowing it down'.

Excellent. Did the save files work correctly?

As explained, the only save file available is for the second type of ghost unit. These units appear Only when loading a save file, and stay permanently. The original type (ghouls and disciples) appear to be created by necromancers/matriarchs but Do disappear after a while. These do not appear in the save file.

The save files attached contain Two instances. One involves a ghost temple guard, the other involves an entire ghost army. I have left the camera where the units are.

New folder.zip

Currently working on the save files. Ran into a slight complication involving the bug. I found that there are actually two types, one of which does not display on them. I shall hopefully post the save files and explain this tomorrow.