Menu in the header won't dock

Question:
Hello.
I have menu in the header that just won’t stay in place, On 4k resolution it will slide a few pixels up or down. Regardless of being pinned. Menu is a custom creation, Top level is a Stack build of 4 containers with text and buttons inside. I cannot change any of this anymore as it will break it on smaller breakpoints. One of the buttons has a custom drop down menu with two items, so that extends the whole menu beyond the header size, but it doesn’t actually affect the header. Its still set and stay at 66px.
I’ve spent days trying to sort it out and now stupid thing wont stay in place. Docking makes it worse. Header settings are set to height Max and Min 66px. This doesn’t change at all when i change resolution. So why on earth the menu keeps sliding from the centre…?!?
Any ideas ?

Product:
Wix Studio

What have you already tried:
Docking from each side , changing scale behaviours of: the header, the Stack, the individual buttons containers.

Additional information:

Not sure if its visible here but that’s from the editor itself. one is max width , other smaller. menu shift a bit up and down.
on live website it is clearly not in the center () on 4k monitor)
On a 2k it is fine.
https://www.friedframes.com/


never mind fixed it …

Turns out docking has to be changed to pixels, and not Scale pixels, but just Pixels. If its % then it will slide for absolutely no reason ,casue the header height doesn’t change, so % should always be the same…

Makes no sense.