I think the difference for posts is, you need to click Quote Reply from the overflow menu after highlighting the text, since the reply input field is already open by default.
You're welcome! And Thank you for the zap! And also, IIRC, k00b or ek or someone else refactored my implementation of this feature to make it better, so yay team!
Quote Replyfrom the overflow menu after highlighting the text, since the reply input field is already open by default.