Base invasion. Used an Aspida to stun and it then got shot to bits and blew up in a doorway blocking it.
Pandorans couldn't get through, neither could mine, despite there apparently being tiles around the edges of the Aspida.
But everyone could shoot right through the wreckage like it wasn't there.
It made fighting off the invasion more 'interesting' than it should have been.
Not suggesting it's unreasonable exactly, but I could see it leading to a situation where it might be impossible to complete a base defense (for example) because the remaining pandorans have hidden...