So far as I am able to tell, copyright and Jaxx now not assistance BIP39 passphrases. The consumer interfaces will not offer you the user any means to enter one when restoring wallet. Having said that, I haven't been able to confirm this with support from either wallet maker. Protection: https://guideyoursocial.com/story4110842/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting