What you were expecting to happen, and what actually happened:
I expected the new troop to have an ability description available to players. Instead it doesn’t.
How often does this happen? When did it begin happening?
Always. Started this morning with the new bounty event.
Steps to make it happen again
Launch game, look at new bounty troop. I’ve tried quitting out of the game and re-launching. It still says TBD.