Unable to View Active Reports in Mozilla Firefox

When you try to view an active report in the Mozilla Firefox browser, you may see a blank page or the following message.

Your report is ready and will download to your Web browser in a few moments.

However, the report never appears. This problem occurs in the following scenarios:

The issue is with the UnMHT add-on, and was reported on the UnMHT Warehouse Web site.

A solution was implemented for each scenario to work around the issue when using the Mozilla Firefox browser.