1.  Broken Lord Hero attack animations have no audio.

2.  Winter Boroughs provide their FIDS bonus to exploitations even though the tooltip states it only applies to city tiles.

3.  Roads will be created on ice shelves during the winter time.

4.  The game will not allow you to move a flying unit over a cliff as the initial move when trying to detach it from an existing army.

Nice findings !

Many thanks for sharing them - hopefully they'll be addressed in a not-so-distant patch ^^