@shiro2809: It has nothing to do with the fact that they are on pc, GTA 5 is just a buggy mess. The reason that only 2 of them saw it is because there isn't any synchronization between player instances. It's why you often see different weather or different time of day between the 4 of them.
Having just finished MK-X earlier today I find it super jarring and weird how almost every character looks completely different in this game when it's a direct sequel and not a reboot. Johnny, Kitana, Jax, and Jacqui look like different people.
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