Run attached code sample and follow the next instructions. That is compatibility test, that started to fail, beggining from b12.

Objectives:
This testcase aims at testing the image cursor feature. Typically, the following scenarios are covered -
getBestSize() called with 2 different sizes, one lesser than the platform size and another larger than platform size.
getMaximumColors()
Invalid main image URL and a valid placeholder image is used to see if the given hotspot values are clamped to the size of placeholder image.

User Interaction:
- Hover the mouse on each of the buttons and check if the following cursors are shown
A bug image on button 19, 19
A giraffe image on button 299, 299
A tiger image on button 290, 290.

A bug and a tiger are not shown for some reason.