BIP39 wallet seed export/import broken and not portable

[Gerporgl]

I was unable to export a 24 words seed to another wallet such a natrium, it generated a different wallet when I did.
Also, if you just right click the wallet and export seed gonano-gui, then copy the string, and then create a new wallet using the copied string it will create a different wallet not based on the same seed it seems.
I was able to take the Nano seed (64 hex string) from natrium and import in gonano, and it works and provide the same wallet.
So the issue seems to be only with BIP39 when the passphrase generated seems to be wrong somewhere.

BTW there should be an export as Nano seed as 64 hex string vs passphrase option all the time, regardless if it was created with BIP39 or other way.