The movement of Advent Gremlin drones is wonky. They do their job, but they move either only slowly or randomly teleport during ability use. Also, they apparently only follow their master if he is in Red Alert.

Status:
Complicated stuff. I will look into making the animations more smooth, but no promises...

Chryssalids in Terror missions don't attack civvies. That was probably done by Firaxis so they don't spam the map with Cocoons. I should look into maybe enabling that again. My early Chryssalids don't have the poison, and once lategame Chryssies show up, the player should be able to handle a couple extra bugs.
The extra pressure may even be appreciated.

Visuals for the Codex are behaving strange. Some animations cause it to revert to vanilla looks.

Chryssalid Bleeders can cause a lot of friendly fire during patrolling when groups patrol close to each other.