Yes and no.
This problem is affecting only one of my two installations of Brave Browser Nightly (BBN).
Only BBN on Android phone is affected.
Android 11, Pixel 2 XL
BBN on macOS is saving passwords normally.
macOS 10.15.4 (Catalina)
To observe this
I had to remove the phone from the synch chain. When the phone was on a sync chain with the desktop, passwords were disappearing from both devices. I suspect the failed password saving on the phone was removing the passwords from the desktop via sync.
Now, basically, nothing is sync’d and only the phone is losing passwords.
IDEA: Consider disabling sync of passwords in Brave Browser. You might find that only Brave on Android or Brave on non-desktop devices is affected.
If the problem is occurring on all Androids, then all devices sync’d to Android are dropping their passwords. That would be a horrendous problem.
I have only Android 11. Are there any cases where passwords are saving correctly on Android 11? If yes, are any of the cases where passwords are being saved by Android 11 on Pixel 2 XL? If yes, maybe there is a permissions issue affecting only Android 11.
If you cannot find an Android saving passwords, and find all desktops not sync’d to phones are saving passwords, this is a widespread horrendous problem.
Desktops running macOS should be isolated from Android or sync’ing in general.
P.S. I don’t know if what access if any this discussion board has to Brave developers or product managers. If this is a widespread problem, this problem is extremely horrible, but, ironically, big problems like this can be used to big advantage, by responding in a manner befitting the problem. That mean maximum escalation, maximum communication that users will see, and al-hands-on-deck to get this solved. If Brave is already on top of this, great. If this is widespread problem, the response from Brave so far is pitiful. If the Brave team is not clear on the extent of this problem, and it is a widespread problem, it means there is huge hole in your operation. I am not saying this to be critical. I love Brave Browser because of its unique values. Turning this problem into a positive can be done. I hope the problem is not widespread but if all Androids are affected, how many androids do you think are sync’d to other devices?
Got to go, hope this helped.