Hey Siweia,

if you start a fresh character, Blizzard shows only one Actionbar. If you add more of them to the UI, Bar 2 + 3 are placed somewhere strange.
"MoveUI" shows the correct placement, but the bars itself are renderd somewhere else.

This is something I was able to see also, if you, for example, dont have a pet active and summon it. In this case, the petbar is placed somewhere else, too.

A simple /reload fix the issue,

Version: 6.29.5 (SL)

See Screenshots attached

Disale ndui actionbar, and use blizzard's instead for now.

Ahh... Its fine. I mean, I love your addon. So I will put everything I found here. Nice thing is, that I can give you feedback after a new version comes out, and I was able to test it. Like the vehiclebar ;)
And Bugs are normal on such a big UI Overhaul, Blizzard made.

I meant disable it, until I solve the issue.

Should be fixed with commits lately.