As you can read here:
there are 3 types of toolbars - depending of how you want to position them.
Static toolbar position is the probably most rarely used layout type. In this case Toolbar / Tabbar is just part of the scrollable page content
Fixed toolbar is also part of the page but it is always visible on screen not depending on page scroll. In this case it must be a direct child of page and if page has also fixed Navbar then it must be AFTER Navbar
Fixed Toolbar/Tabbar must always be a direct child of a page and AFTER the Navbar (if fixed navbar is used on this page)
If we need only one common toolbar for all pages in View then it must be a direct child of this view and be BEFORE all pages in view
Make sure you position it well
So the position is really important. I think you are going for fixed so it must be placed in the Page element.
Is that your case?