Hello @JeffreyUnfried ...

I don't know if you visit other areas of the Canvas Community, but a blog post was recently published by someone from Instructure that I think you'll want to read.  In the blog post, it details that the new interface will be reverted soon with a few changes.  So, I wanted to provide you with the following link:

Updates to the Assign To Interface

I hope this will be helpful to you.