Item 2 in @gaetawoo post
2. SECURITY BUG: When entering Master Password on Android for the first time after installing the app (in order to sync the database), the typed characters show up on the keyboard prediction bar, which means that text entry field is NOT coded as a password field (which would not show the characters in the keyboard prediction box). It's just an obfuscated normal text. Some keyboards automatically saved typed words or entries. Or someone may be peeking and see the entire password typed out in the keyboard box even if it's obscured in the field.
Also exist when you choose to edit a password field of an existing record
Samsung Galaxy S7 Edge, Android 7.0