Hi @Akash Vyas
Thanks for reply!
I tried from Google Chrome Version 65.0.3325.181 (Official version) 64 bit ( Original String from my bronwser Versão 65.0.3325.181 (Versão oficial) 64 bits ) - pt-BR Language ( I'm brazilian) - I used Chrome for root user in a test, and from Mozilla Firefox 59.0.1 64-bit from my user (non-root).
Today, testing, I discovered the trouble, in my home folder, inside ~/.local/share/applications/mimeapps.list all association was to firefox (initially its not a trouble.. ), but i want to test Chrome.
I changed in KDE 5, in K menu -> System Settings -> Applicatives -> Web Browser -> Google Chrome and Chome not was become my default browser (arghh!!), them I removed ~/.local/share/applications/mimeapps.list and tried again, and Chrome open correctly with autorization (Yes!!)
I not tested back to Firefox being my default browser. But it solve my problem, now I will test Enpass to be my Vault.