My Space Marine fleet is based on stealth so this pretty much cripples me. On the flip side the enemies were permanently spotted to but they were bringing much heavier ships.
Is it a feature that at the end of longer games all ships are revealed permanently? Seems more like a bug to me but not sure.
Well, doesn't spotted just mean that they know something is flying there and they only see a red dot? As far as I know, Space Marine fleets don't have cloaks like say, the eldar races have them, who can go completely invisible.
I mean fully revealed. I was being chased by two Mechanicus cruisers in silent running and even went into a gas cloud but no cloaking appeared. I could see their ships and they could see mine.
I could also fully see a Cairn on the other side of the map. Not just the red dot.
I'm not sure if this is a bug, based on the kind of perks they chose at the start of the map. Though I'm not too familiar with Mechanicus perks, I know some races have perks that increas their detection range, meaning they'll detect and fully reveal you at a longer range.
I'm not sure this is the case for you, but if that was the case and they seemed to be out of range of 'your' detection range, but had a perk like that, increasing their range by.... 4500 I think? It would mean they could see you still if they were close enough.. At the same time, seeing a Cairn on the other side of the map isn't that rare, if they use skills or just about any movement increasing effects, it would reveal them I think.
The improved detection perk only applies to escorts & light cruisers. He was running cruisers, which can't even get silent running I think.
I was running light cruisers with silent running and emission cloakers so I was constantly full aheading so WELL ahead of their detection range.
I'd be ok with it being a feature but I still can't see how it's not a bug, having the entire map revealed. Is there some weird mapwide Admech scan?! I literally burned from one map side to the other, down and across and didnt enter stealth once despite silent running and using gas clouds 
