Seems the Coop missions are having issues again in this version.
So far I can confirm mission 1, 2 and 5 both desync with even 2 players at some point
Mission 3 (red flag) starts out even with 1 player giving you unlimited eco... kinda ruins the fun.
Mission 4 wont even start with 1 person
Mission 5 doesn't let the map expand after killing Hex, so can't be finished.
I havn't tested mission 6 yet in 3650.
These coop missions are a lot of fun when they are working, i wish I knew how to fix them myself, or I would.
Please give some COOP love!