Tiberiumkyle

Issue was looked into, it appears the perk is working but the UI isn't updating properly until after a game restart, as you found.

For future issues, I strongly recommend you use the steam forums. These forums are old, outdated, and barely get checked anymore.

Known issue, should be fixed in the next update.
 

I also recommend using the steam forums for RtR, as these forums aren't checked that often.

Apologies for the delay in replying.
With the region selected on the world map, hold shift and click the reset ai button that appears. Hopefully that will let the region load, though it may take awhile if there are lots of villagers and monsters on the map. Also best to not use that function unless we ask you to, as we sometimes need to save for Ray to poke at to help fix the problem.

I also recommend using the steam forums for RtR instead of here, as these forums are not checked that often.

Ballista prioritize the farthest target it can do the most damage to. All other towers prioritize closest target it can do the most damage to, all take damage resistances into account.