What you were expecting to happen, and what actually happened?
Using a Mythic troop would give a higher bounty multiplier than an Epic troop. It gave less (23x vs 25x).
What are the steps to make it happen again?
Swap a mythic troop (Parrot) for an Epic troop (Half Mane)
Do you have any screenshots or video you want to share with us so we can see the problem? Attach them to your post!