Buildings missing from the Special Buildings area when a Planet's tiles are full

Version: 1.0

Perhaps not a true bug but definately undesired behavior.

Currently when a planet has no usable tiles left, a good portion of possible special buildings are removed as options (weirdly not all options, a few do remain). This is not ideal because there are many cases where I would delete any existing tile to build special buildings...but I never even know I have the option.