Locked rooms have missing images on the battlefield

When playing either half of a room, the card will have a missing image until the other half is unlocked. This is because the game is trying to find an appropriate image for a card with the name of the unlocked door, but can't find it because the downloaded image's name pertains to the full card. For example, below is an [[Unholy Annex // Ritual Chamber]] with only Unholy Annex unlocked. Note that the card has no image and that it's trying to find a card called `Unholy Annex.339.full.jpg`.

The image it's searching for does not exist—only the image pertaining to the entire room exists, which includes the name of the other half. See below:

Fully unlocking the room by unlocking Ritual Chamber causes the game to correctly search for the full card name, find it in the files, and render the image correctly on the battlefield: