The Operative class is glitched.
Let me elaborate.

I was trying to do the Security Campaign Mission where you first repair the crane (engineer) and then in phase two hack the missile (operative).

Before I continue, there is a mechanic in game where if you try to buff someone, and they are too far away, you will run, faster than normal, to the teammate to distribute the buff.

Unfortunately this mechanic has been happening when it shouldn't. I am trying to hack the objective, and as you may know, when hacking you are able to move around to find a position that is safe from cover, at the cost of signal strength. I have been trying, but without control, I start sprinting back to the hack site, and when I try to run back to cover, I cannot, I am still running to the objective, making me an easy target for enemy fire. This makes completing the mission impossible, as the objective is extremely difficult in the first place, being in the open and near the Resistance spawn.

This has also been happening when I attempted to extract intel from an incapacitated enemy, except it sprinted me to their respawn point and slaughtered by turrets before I realised what was going on.

Does anyone know:
1. How to stop this or prevent this happening,
2. How to complete this objective without cover,
3. Or any other pieces of information which might help.

This has also been happening when I attempted to extract intel from an incapacitated enemy, except it sprinted me to their respawn point and slaughtered by turrets before I realised what was going on.

On an unrelated note, my character's archetype, scars and tattoos and gear all got changed to those of my other character, to look like an exact replica, only on the Resistance side. My original character remained unchanged. I only realised this at level 10, because I mainly play Security on that character.

BRINK is a great game, but these glitches are ruining the experience.

Also, where do I go to report this issue?

Well, for the run-and-hack thing, you'll keep running back to the hack-site if you hold down that action button while you're hacking. You should let go of the button once the hack is in place and then you can carry the remote-hacking device around freely.
I'm not sure about extracting the intel because I haven't done it before, but it might be the same thing.

As for the character archetype, you can change what they'd look like on either team (Security or Resistance) in the customisation screen by pressing the button that appears on the top right of the screen.

Hope this helps!