Thanks. This is an interesing one - I can't actually reproduce this, even in the Steam version of the game. For me the Automed Module doesn't trigger and the soldier remains at 57HP.
There is a semi-connected bug that we do need to fix which is that the max HP on the inventory screen for the soldier is shown as 72, rather than being modified down to 57HP by their injury.
Can you check it's definitely happening for you in the latest version?