I found the explanation
The reward of the same type are shown from the lowest to the highest from left to right regardless of Cedric or treasure gnomes drop.
But this one is really really weird, it kind of makes my theory fall…
That one I guess the 3 event keys are from Cedric
So the reward order is determine the way I mention above, it is shown from lowest to highest within the same type reward. But also if it’s a Cedric loot it will be shown first if it also respect the reward order describe above.
That or the reward are shown based on which troop is killed first lmao…
Seriously devs please help me!!
I know it’s a stupid thing but it really bugs me XD