Thank you for your bug-report, PaulB!
It will be reviewed as soon as possible by our Developers.
Can confirm both as we tested quite thoroughly with Paul today.
I've shot and been shot at a lot in my days, and I can back this up from a lot of experience.
kelvar it self is fixed
hitbox etc and damage can be complex
as well as slight sync issues were you might think you shooting and hitting but the server sees differently
not much can be done about these slight variances and inaccuracies