Solved:  How these ships heal the fleet was non-obvious to me.  Once how the healing effect is triggered was pointed out to me I was able to continue.

Issue:  The 'Promethion' set of Commander Ships all have the trait 'Fully heals the fleet.'  If a fleet containing one of these ships suffers damage, the damage only heals at the standard 1hp / turn rate.

Steps to Duplicate:

• Create a new race with 'Promethion' Commander ships
• Start a new game
• Assign a commander to one of these ships, pair the Commander's ship with your Survey vessel
• Go fight something
• Issue ---> After the battle, ships are not fully healed
• Issue ---> After a turn passes, ships are still not fully healed.  They only gain +1hp.