Bug:

(See title)

Replication Method:

Simply use a flying unit, particularly those with multiple models, and attack an enemy unit on a wall in a Settlement/Siege Battle

Description

They will get stuck in the air, often causing the unit to refuse moving beyond a certain point before attempting to go back to the stranded entities; may also cause the unit to move with only partial entities. 

If the flying unit is small and can traverse down off a wall while chasing an enemy with Guard mode off, they may become stuck inside the wall or just outside it causing the same issues as above