Hello,
apparently the previous topic is closed. But I was wrong as today to think the trouble might be fixed (6 months have past).
Because I had try again and no the both fields (login and password) remain empty. Now to resume the difference are :
Firefox-Nightly_v60_x64
EnpassSoftware_v5.6.5 (Desktop)
https://www.enpass.io/release-notes/windowspc/
https://www.enpass.io/downloads/
and EnpassAddon_v5.5.2
https://www.enpass.io/release-notes/enpass-browser-extensions/
https://www.enpass.io/enpass-browser-extension/
The EnpassAddon seem to work but it was necessary to disable the setting called Verify browers (and indeed I do remember the cause).
Do you need more informations ? Which one have or doesn't have this trouble ? I could give a few examples because I had try several software to replace my previous password manager. After all, it could be another sources for inspiration.
Kind regards.