Ok so you go into an STF match, you fire a couple of shots and then your ship warps out. I haven't suffered a leaver penalty when it happens but it does leave your team mates in the lurch.
I did notice that the last time it happened i was in infected space elite and just as i fired i got a mail saying something had been sold on the exchange, just as it said i had recieved my credits, zoom... To warp we go.
1. most often in KASE but other maps too : you warp in into mission system some 300km from your team mates. Usually after 10 - 15 secs you "warped in" to your team. But sometimes after a minute or two. I think it may depends on connection quality, but may be not.
2. the person gets kicked right when the map starts. Happened 2 times to me today. Person gets "you have been kicked" message, and no leaver penalty. Can subsequently join up the existing instance of private game. Happens on CSE mostly and NoWin. And if NoWin a person cannot join the instance.