[LH4032] Inside Margins Not Mirroring When Compiling Paperback to PDF

First timer here. I’ve been searching for solutions for a few days now and tinkering with settings to no avail, so I thought I should post.

I am on Windows 7 and Version: 2.9.0.23 Beta (676099) 64-bit - 08 Sep 2019

Trying to compile to PDF using a Format that was duplicated from “Paperback (5.06” x 7.81") and then customized.

And I am running into a couple these problems, the first:

Possible Bug #1: The inside (gutter) margins are not mirroring (alternating) even though I have the box checked for “Use facing pages (alternating margins, header and footer).” I have attached 2 screenshots: 1 showing the margins and checked box, and 2 showing the PDF not alternating the margins.

This has been filed. And thank you for the helpful images!