seems like old times...

I sent an email to the ACS about all those strange typos in the Middle School Chemistry curriculum, and it turns out that it's pdf-viewer specific.  After a brief email exchange, I decided to try it in the different PDF viewers I had available, and what do I find?  The PDFs look perfect in Google Chrome and Adobe Acrobat, but are full of errors in Microsoft Edge.

Par for the course, unfortunately.  Microsoft apps are such appalling bloat-ware at this point, and their online versions are so ham-strung you can't even make a table of contents!  I don't even want to talk about the fun I had setting up OneNote Class Notebooks for my students over the weekend...

Anyway, it was fun trying to identify exactly where the problem was, and even better being able to pinpoint something.  And the ACS guys were great to work with, too.