@neetesha
"Install security lock in the phone. choose from Pin, pattern or password."
This way to fix the problem failed!
Security lock is already installed in the phone (pattern).
Changing the Security lock to Pin or Password does not help.
Opera passwords are still invisible!
P.S. (Text translated by Google translator)

I can not see the saved passwords in the settings.

in Android Opera, there is no way to see saved passwords.
All passwords are hidden with asterisks, and there is no possibility to view
the password (there is no button itself (with a small eye) to display the
saved password). There are only buttons for copying Addresses and Login.

I tried various methods of locking the phone (Graphic-Key, Pin-Code,
Password). After each change, rebooted the Phone.
But in the Opera, in section, the “Saved Passwords” still no the “Eye” button (which allows
view password).