LW 1.2
When exiting the Avenger, I got the end of month "INCOMING TRANSMISSION" but I also just finished the Network Tower. The window for the Council Report opens, then over it after clicking OK the Assault HQ mission option comes up. Whatever you select, the End Of Month report and Supply Cache is skipped.
Reloading the tactical save doesnt resolve the issue, the timing is too perfect they are right on top of each other.
I also suppose this can happen in the base game.