The steps/actions aren’t necesssry. This is a bug from the game itself where if you jack someone from the passenger side of a BF Injection, they’ll die as if you ninja-jacked them. I don’t know if this is fixable tho but let’s wait for Mike.
It's called ninja-jacking and it occurs when you carjack someone from the passenger side while holding down the SPRINT button. I scripted detection for it (it would kill the offender, and when the victim respawns they will be teleported back to the vehicle) but it doesn't work 100% of the time. It's not something I can 'fix'. It is against the rules, however, and should be reported.
I didn't taped action buttons rapidly. just tapped single times and that happened and also got jailed. I hope that will solve eventualy.