It is not the mods being used.
I too am having this issue even with Vanilla.

I am not sure what is causing it but it seems to be an error in ALiVE because sometimes the CAS modules dont even load into the requester. In example, 2 a10's and 2 attack choppers sync'd to module, then in mission, they all show, until a combat support is used and they will vanish slowly one by one. This is not the respawn limit or timer. I adjusted them.

I also noticed that the kill feed stops working around the SAME TIME that the combat support and logistics take a dump.