引用された引用文を引用すると、引用者が著者であるように見えます

[awesomerobot (Kris)]

This might be a regression, I believe this feature was originally implemented here:

Parsing partial quotes from nested quotes?

This has been implemented and works as expected now. Quoting a quote will preserve the original post information. Try it out with one of the quotes above. https://github.com/discourse/discourse/commit/7b7e1717f2c1579ae7de9d344a7e7cbc63f8fffc

Though… this might be a new edge case because a user wasn’t attributed in that original quote?