Using more than 144 adorners

Question

It appears that the maximum number of adorners that work without any breakage is 144.

I have a ScrollView with a bunch of objects, and many of them come with adorner

Answer 1

At this time there is no known way of doing this.

Which is just as well, because I found the performance to be poor; simply subclassing my Image control that was supposed to display the adorner, and drawing the overlay in the OnRender, worked much better (and unlike WinForms, the visual can extend beyond the logical boundary of the control).