QtPdf: PdfMultiPageView goToPage() going to wrong pages / weird offsets

Using goToPage() to navigate PdfMultiPageView produces varying results. Sometimes it works OK (page is positioned properly in the view) but in some cases it positions the page almost entirely off view. This happens most commonly when the view is first scrolled with a wheel and then goToPage is called.

Steps to reproduce the issue:

1. Run the attached project
2. Scroll down to page 2
3. press - or + in the spinbox to goToPage