Firefox won't memorize some e-mail account names!
I access several Gmail accounts (personal and professional) on Firefox. Until recently, all of them had their account names (but NOT their passwords) memorized for autocomplete, which was very time-efficient considering some account names are quite long and complex: I would just type the first few letters and then select among the memorized options.
These past few days this changed: Now, on one of my computers just my personal account has its name memorized. I have to fully type all other account names (namely all my professional accounts). On my other computer, on the other hand, only 4 specific account names are memorized (including one from a friend who occasionally uses that computer, but NOT my personal account and some of my professional accounts).
Any idea why this is happening? Thank you
Opaite Mbohovái (3)
Firefox has never saved a "username" without also saving the "password" in the "Password Manager". What you were probably seeing was a "form data" entry getting saved and the username field for website login was picking up that "form data" entry having been remembered.
Firefox 43 has a new "Logins Manager" and I don't think "form data" would be used for a "username" field for "login" in lieu of a saved username / password any longer; but I can't say that with any certitude. I don't have very much "form data" saved in Firefox 43 to try to reproduce the older 'fluke' where "form data" was offered up as the "username" for website login. I primarily use the Firefox 38 ESR version - Extended Support Release.
Yes, you're right. I didn't use the correct term. It's, in fact, the "form data" entries that were "forgotten" at a certain point (I don't know when) and are not being memorized anymore. But that only happened on Google accounts login. And I was stuck with 1 entry memorized in um computer and 4 other memorized in another computer... Anyway, I solved the problem by checking the "Stay signed in" option.
The website might be using autocomplete=off to prevent Firefox from saving and auto-filling form data. You can check that via the right-click context menu in the Inspector (Inspect Element).
Firefox won't auto-fill saved form data automatically when autocomplete=off is used. Start typing the name to get a drop-down list.