Safari Import Password from Firefox bug

Hello!

I recently tried to save my passwords to Safari to able to use passwords on all devices.

Paying to services such as 1Password i don't have money, so this is no option to use on all devices third-party services.

I want use Apple KeyChain (Auto-fill where it is possible on iOS, macOS).

Info:

OS: OS X El Capitan

Browsers: Safari and Firefox (as default, trying to switch Safari)

Connection: Wi-Fi (ADSL Wi-Fi Router)

Macbook: Pro Mid-2012 13" Non-Retina

Steps to reproduce bugs:

1. If you have Master Password on Firefox, please disable it temporarily to be sure!!!
2. Open Safari and Click to File > Import From > Firefox
3. Check/Tick "Passwords" checkbox
4. Safari asks password of Master Password of Firefox whereas it's disabled from Firefox (there no password, i don't know)
5. Enjoy bug, you and me can't import passwords from Firefox

Please, help me fixing this bug

Thanks.

with Best regards,

Davlik from nice macBook Pro 2012 (13", Mid-2012, Non-Retina)