There's a black frame once per rotation when defenders turn hostile to the player, and once destroyed have a small chance of not updating the image to a destroyed version when killed.

george moromisato 11 Mar 2019:

Two problems:

  • An animating station image does not the damage paint (only one frame gets it).
  • Need an option for a destroyed station to not animate (or to provide a special image for the destroyed version).
george moromisato 6 May 2021:

Fixed in 1.9 Beta 4.