A first-aid kit with 16 charges = 99% heal

Voolf91

A first-aid kit with 16 charges, if you go through all the tests, the reaction is still not enough to be cured completely by only 99%, also with the yellow one to which you added 8, 99% also remains ... Is this a new feature? do you need to pass the test perfectly well to be cured? Everything worked fine, I didn't see the latest updates in the list of changes, what would have changed in the first-aid kits, how did it happen that the developers screwed up again?