Unexplained energy loss

Ok I just started with a FULL energy bar ( 2020 points ). I went to the current map I am working on and hit 3 monsters worth 80 energy points each. Energy bar said 1780. Moved back to my kingdom and the energy bar read 1614. 166 energy points just disappeared for no reason. Previously this happened and support wanted screen shots...yeah right. Anybody else seen or heard of this magic deduction?

That's a known issue (maybe not by the devs) since a long time. I recognized this the first time when I joined a guild that had energy regen bonuses bought...math is not the strongest skill of the devs.

That explains it. We just purchased our first energy regen boost recently. I thought I was going nuts when I started noticing it. Thank you very much for the information.