The Canvas has a scrollbar that interferes with scrollbars from galleries nested inside.
The Canvas object can benefit from a ShowScrollbar property like galleries have. Then you could disable one or both as needed.
Please add ScrollBar property to Canvas control so we can enable or disable (hide/show) as needed...
Agree with Mr Dang on this for sure. In fact, I dont think i have ever disagreed with any of his suggestions! 🙂