Draining motivation?

I feel like your Pokemon at a gym lose motivation over time not from losing in battle, but just in general. Today I put my 1764 cp clefable In a gym. Later I found its cp was at 1666, 15 minutes later it was at 1644 cp! Not its at 1408. Same thing is happening to my gyrados and happened to my vaporeon and ursaring. Im not sure if this is some sort of glitch or some retarded new system you implemented. Either way it needs to be removed and put back to the way it was.

evanmollica about Pokémon GO, v1.39.1