$field was not defined in getReplyForm()...

...  in /modx/core/components/quip/controllers/web/ThreadReply.php

This could lead to the following problem:

1) Login to Manager
2) Open a new comment form
3) The user fields should be pre-filled with the values from user profile
4) Change content of any of the user fields (name, email, website)
5) Preview the comment
6) The changes in the reply form are overwritten with the data from the user profile