It appears that with Firefox 63, that the Payara admin web screens no longer work correctly. It doesn't show the checkboxes being enabled or allow you to check or uncheck boxes anymore. An example is under configurations, server config, http services, http listeners, http-listener2 the status and security should be checked by default but in Firefox 63 it doesn't show that or can you interact with it. I have tested this on Payara 5 Update 183.
Thanks