PA+UG

[AP579]

This is the only permanent that destroys itself, so this is a likely minor bug.

It appears similar to other bugs where the slot still registers a certain variable and the next object to sit in there gets it. I suspect that it was just forgotten that UG can be destroyed when it is protected and this bug appeared.

I was playing an Immorush that had UGs and the UG got protected. It was in slot one, there were no pillars. They detonated it next turn. Afterwards they played another UG. It was autoprotected already.

Sorry, I'm absentminded and forgot to take screenies.

[dragonsdemesne]

Someone should check if this happens with shard of patience, since it destroys itself now, too.

[Wizy]

Confirmed in the trainer. However it does not happen when the player does it, looks like a bug with the AI.
I haven't tested SoP yet, still trying to figure a way to make the AI remove the SoP then play another SoP.

I will edit and add images later.
edit:

Spoiler for images:

edit2: Indeed, it happens with SoP too.

Spoiler for AI plays the first SoP and protects it:

Spoiler for later, AI removes the SoP:

Spoiler for AI plays a second SoP: