The main reason I want to use firefox ESR is to use a proprietary database tool for work that only allows oracle-java based web logins for linux (or a windows only thin client). I also want to use the full version of the outlook web application which only works in firefox. I don't want to run the NPAPI plugins for normal web browsing and email.
I have the repo version of firefox installed and firefox ESR installed in /opt/firefox and linked to /usr/local/firefox-esr
When I run firefox any attempt to run firefox-esr either brings up a window without the NPAPI plugins.
If I try running with the --new-instance or --no-remote options I receive the following error:
Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.
Regardless which one I start first, I can only open that one, and get the above error if I attempt to sidestep.
What makes this an especially annoying problem is that I often have to respond to emails that I need to access the database to deal with. So either I close and open many windows.