There is a mechanic in the game where if you Bandage yourself very quickly only one bandage will take affect. Maybe if you add a timer mechanic to stop this from happening or allow items to be batch used that would be great.
+1 yeah i tend to use a bandage, wait untill the regeneration icon is flashing which means the buff is vanishing, THEN use another bandage in succession so i dont end up wasting them because even if I use 4 at once the game only counts it as 1 untill the buff is completely gone. They should either stack in terms of healing for a long time or just not let you use another one until the current one has worn off.