When importing certain Word documents (example attached), editing the resulting page in the WYSIWYG editor causes Javascript to freeze. On Firefox, this leads to a warning:

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: https://wiki.service.emory.edu/s/2029/1/2/_/download/superbatch/js/batch.js:144

Copying the page using Tools -> Copy preserves the problem in the copy. Copying the wiki markup from Tools -> View Wiki Markup and pasting it into a new page results in a copy that does not exhibit the problem.