I perform Beta testing of GPS suites for several groups. My main interest is the CENTOS 8.2 operating system but I also service some Windows 10 laptops and two LINUX Mint20 machines. A GPS group in CANADA, https://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php operates an on-line processing service that I use and beta test for. They have a new engine about to be released but my main CEMTOS 8.2 machine is new and Fire fox is also going through updates. The issue is that the I can uses Firefox and WINDOWS 10 okay on the old and new NRC-Canada applications. I can use old and new NRC-Canada software with Google Chrome satisfactorily but I cannot run either old or new NRC Canada applications with either LINUX MINT 20 firefox (Version 80.0 Firefox for Linux Mint-1.0) or the Extended Support Release 78.2 that is used for Mozilla Firerfox for CENTOS Linux redhat - 1.0 Appreciate help with this issue. With regards Peter ([email protected])