Funny Patrols...

I was playing through the combat patrols for the first time tonight... I played the mission Mano a Mano in an LFN corvette, and after sinking two enemy corvettes and one u-boat, my first officer said that all enemy ships had been destroyed. I sat around for a while waiting for a victory screen, left it for twenty minutes, came back, still no victory. Anyone else seen this (reminds me of the formerly neverending ss wren mission)?

The second problem I had was in the second submarine combat patrol, again LFN... the mission said that to fail, half of my ships (convoy or escort) had to be destroyed. Well, only two tankers (not half) were killed in the initial action, so no message. I start turning to engage approaching vessels, and randomly my first officer announces failure and the Continue Playing Box, Yes, No? comes up. I looked at aftermath screen and the mission had terminated randomly, withuot provocation from a death/kill... this happened three times, so now I'm just confused...

Any help is appreciated.

I remember that in the sub patrol mission where you have to fend a merchantship under repairs against incoming enemy craft, that the mission would not end until I returned to a position near the merchant, even though I had completed all of the objectives quite some time before.

Could location or distance away from some point be the cause of your first problem?