Cipher (encode) on Writ of Return does not trigger

[left scarab]

[[!writ of return]]

I cast writ of return returning dazzling sphinx, as writ was resolving it did not give me the prompt that cipher cards usually do to encode the card on one of my creatures

[azure mantle]

https://scryfall.com/card/ncc/42/writ-of-return

Writ of Return

[left scarab]

Mac 1.6.56