I experienced a possible bug:

Map: ns_eclipse
# of players: not exactly sure, around 4 or 5
IP Location: In the eclipse hive near the resource tower

Details:
I had dropped 3 IPS and when looking at the scoarboard only two marines were reinforcing, I jumped out of the chair to check if the IP's were built and they were, all 100% health and pressing use on them didn't do anything.

So I did a test, I built a 4th IP and we were now reinforcing 3 at a time. I then sold the same 4th IP I built and we continued reinforcing 3 at a time... at that point the bug was gone and that was the end of that.

I ask all constellation members to watch out for this possible bug. I noticed because it happned at a crucial part of the game where we were depending on sieging out computercore through a phasegate and we ended up loosing the PG because not enough players were reinforcing to fend off the aliens, which caused lots of dead players and the loss of the game.

it takes a few seconds after a marine dies before he changes status from 'dead' to 'reinforcing'. Is it possible you just didn't have enough marines in the queue to trigger all three IPs at once? I often make this mistake myself, and only see two marines spawning for a few seconds and ask for another IP, only to find out we've already got three but the third marine just hadn't been dead for long enough.

If your three IPs were consistently spawning only two marines, was it the same two IPs spawning the marines? Or did marines spawn at all three IPs (but only two at a time). That is, was there one IP that never spawned marines?

It would be tricky to get 3 or 4 IPs to to be spawning at the same time. As 3 or 4 marine would have to die, pretty much at the same time. Mind you, in a suicide LMG rush on a hive, this is not impossible.