Navbar being covered by scrolled graphics

[Acorn]

Have to ask :-) What is the difference between "Sticky" and "Sticky at Top?

A sticky at Top object is placed on the page and will scroll up to the top of the browser and go no further. Sticky is fixed in place in relation to the top of the page.

Xara presents them differently in terms of what is under or over them. It gets more entertaining when you throw in a Stretch Full Width effect as well.
In XPro+v21.8, Xara may have tidied all this up; I have yet to check more carefully.

Acorn