From what I've seen, the range is an orb. I think the farthest I've grabbed anyone with Quantum Entanglement is when the target is in secret shop or the underground passage/basement and I'm on the surface. You can stretch the window of success a bit if you actually communicate to the teammate...
agreed. constantly getting caught near edges of buildings, doorways, staircases, etc. Often will have the aim indicator at my intended spot only to be teleported to my same exact location