Me and my brother started our first multiplayer campaign (MoH) shortly after the release. We realized something was off. Whenever we got pop-ups in the end-turn segment, none of us could "acknowledge" them anymore, as it just simply showed the pop-up for a split second then vanished. It was survivable, but then it started happening during sieges by the AI.
It usually requires both players to choose an option, but only the player defending had to choose this time. So right after clicking delegate, it just skips the "cutscene" and goes back to the AI still sieging you and the end-turn segment continues. It's like we're cheating with invincible cities. We tried starting a new game three times now but to no prevail.