cosmotopper - 2017-05-11

When I try to initiate an update, Webmin builds the "complete list of updates", and I click on the "Install Now" button, it fails to initiate the update. When I try to return to the dashboard, I get the "confirm I want to leave the page, data may not be saved", warning. Apparently, the process is stuck at the browser level.

I logged in using Chromium, and everything worked as expected. My Firefox add-ons are minimal, no blockers or plugins likely to interfere with launching the update. This is consistent with my experience that Firefox development has become progressively more unstable, year after year. However, suggestions for a workaround appreciated.