sub destroyed but propellers working and crew chatting

[tonschk]

Hello , please can somebody give opinion about this , I usually play quick mission , the sub got damaged with a few deep charges and four compartmants with flooding , only 20% flooding on each of the four rooms ( only one hole in the hull because a previous surface fight with flack gun ) I have not idea about how much was the hull integrity % because is not yet there ( like SH3)the situation in my opinion was not too bad ,the sub slowly was going ahead to periscope deep ( not sinking) and the japanese destroyed was far away, but after a while appeared the screen represent game over sub destroyed , continue like observer . I went back like observer , and the sub was still going ahead with turnings propellers and the crew telling me about the dept of the sub , in SH3 when the sub was destroyed , was inmediate total full destroyed not moving propellers not a word from the crew , may be i can mod some files to correct this non sense situation ,or mod other files to avoid the quick game over I got in this game, thank you for your help