Internet Explorer very slow to resize document with large spines (100+ pages)

[tinyioda]

General Instructions

• We've had complaints from the field that when users are running internet explorer and using books with large spines that the browsing experience is poor. The book in question was a math textbook with MathJax, Tables, Images, etc.

This issue is a

Bug

Expected Behaviour

Book content should resize and flow as if it were any other web page.

Observed behaviour

Book content becomes jittery/laggy and unresponsive to the user.

Steps to reproduce

1. Open multimedia rich book with a large spine (80-100+ pages)
2. Resize the book content.

Test file(s)

Unfortunately the book in question is only available for sale and I can not link it.

Product

• Native application (Readium SDK C++)
  • propietary app
  • Windows 10
  • WPF application using the WebBrowser control (IE 11)