Move Mininmize not working correctly.

I understand that moves like Minimize and Double Team are banned in PvP. But in battles with pokemons it should at least work correctly. Now a normal Double Team move needs 6 plays to max the evasion stat and a Minimize move requires 3 plays to max evasion stat (i.e. it increases evasion stat by 2 stages, unlike Double Team who only increases evasion by 1 stage per play.). But when i use Minimize in battles (NOT PvP but battles with pokemons) it takes 6 plays to max evasion stat. That is the bug i wish to report. Again I know its banned in PvP but i am saying its not working properly outside PvP. Hope this gets rectified soon.