Well ... i am not sure if to talk about fixed.
Almost the damage model has chnaged, Hit Points and flooding times was increased in V1.2 but some problems still present.
Uncontrolable sink is still present but runs fine now.
I was able to control up to 5 "uncontrolable" sinks, teh crew recover the sub, controls the sinks and recover the asigned depth, up to 5 times. in the "uncontrolabel sink" number 6 my crew loss control and asigned depth can not recovered any more and sub dive up to it crushed.
So good... almost we have some chance to recover the sub.
But there are some problems as the crew taking damage on AAA and Deck Gun Stations when submerged.
It seems the game assume they are on this battlestations when there is deck damage even when the sub is submerged.
May be this happens because we have not a Rest Room where the deck crew is automatically moved when you dive as in SH III.
I solved it moving manually my AAA and deck gun crew into the sub prior to dive or prior of any depth charge attack.
Runs better after patch...