i've noticed an issue with food, i currently have 700/7 food, it allows me to eat infinitely. it also only restores 10 HP per burger. moreover, i noticed the skins for Annie don't seem to have any effect, i can't get healing from her nurse skin, and the bikini doesn't heal me.
That is debug feature. Healing is done by "EAT/HEAL" key - see key bind options or it is extra button on android. This is only temporally for debugging purposes.
Annie skin only works if you bought it in said level. That bought effect lasts only till you complete level, you can reset or exit level and it will be active till you finish one. When you bought any skin before it will be available only for cosmetic purpose. And you can activate any and all effects at once if you want.