Platform, device version and operating system
What you were expecting to happen, and what actually happened
During pet rescue, I got 149 XP and 13 Souls. I expected 113 XP and 8 Souls.
How often does this happen? When did it begin happening?
Steps to make it happen again
Play a game in dungeon or pet rescue and check your rewards. They should be at around 113 XP and 8 Souls (+104% Souls, +214% XP for me)
Play an explore game on difficulty warlord 4 and win and check your rewards. They should be at around 149 XP and 13 Souls (+204% Souls, +314% XP)
Switch to dungeon or pet rescue, play a game and win. Check your rewards.
This also works for delves, if the delve has already been started.