"Organize Pages" showing pages from right to left instead of left to right

Previously, when viewing pages in "Organize Pages," it would show them 1-8 in row 1, then 9-16 in row 2, etc.

Now, it shows them in reverse order per row; e.g. 8-1 in row 1, 16-9 in row 2 (see below image).

This just started today.  I have since updated to the latest update for Acrobat Pro DC, and it still shows this way.

I have looked through all relevant-looking options, but nothing sets this back, and I cannot think of what I could have possible hit to change this.

I have also attempted to find any relevant results on Google, to no avail.

Thanks!