Reward when changing level.
Text copied from Wiki.
RewardsEvery time you level up, you'll get 1 GOLD reward and full refill of your energy (untill 500 or 600/650 energy, depending of your experience level). You will see a popup telling you about the reward instead of an alert.
So if your bar is at 50%, the reward will be only 50%.
So if your bar is at 90%, the reward will be only 10%.
Today, as happened a few times, I was a full bar and would switch level, with a full bar with 2100, there was only 2XP to raise the level.
I lost the equivalent of 20 energy bar.
My suggestion is to fix it.
Create a button or anything, like they did with the demage booster.