You really don't see that icon with buttons is jumping around after pressing 3D touch? Really? Or is it ok that buttons can just jump 10px in each direction and that suppose to be normal?
I'm saying that I do NOT have that happening on my phone. I see it on your video but that's not happening for me.
I'm sorry it's happening for you, but AGAIN, if you're worrying about this as being something major I really don't know what to tell you. Hopefully it'll get smoothed out for you in a future release.