Quickbar 6 should be right after quickbar 5, without other controls inbetween. At least that was the behaviour in 0.15.
[HanziQ][0.16.5]Wrong order of quickbar controls in menu
[HanziQ][0.16.5]Wrong order of quickbar controls in menu
I'm an admin over at https://wiki.factorio.com. Feel free to contact me if there's anything wrong (or right) with it.
Re: [0.16.5]Wrong order of quickbar controls in menu
Fixed for 0.16.7