This is a common situation for me in Humankind:  I need to reinforce a battle with an army that's far away.  Can I make it?  The white movement arrow says I can!

Unfortunately, that army used all of its movement to get to the tile adjacent to the battle, but this bug makes it look like they can move one more.

Fix: Accurately show when a unit will end its movement next to the battle, and display a grey arrow (ending with "2"?) into the reinforcement slot.