When using an Apple Magic Mouse, why is the scroll zoom motion very fast in the HTML5 Viewer?
What can be done to improve the behavior?
The behavior is unique to this specific Apple device. Similar behavior is known to occur in other HTML5 based or similar (viewing) tools. Since the fast scroll zooming is limited within the Viewer, the Mac OS Preferences do not have an option to change this behavior.
As a workaround, try to avoid using the scroll motion on the Apple Magic Mouse when panning, annotating, or other such activities when using the WebCenter HTML5 Viewer.