Earlier quoted context omitted.
In the 80s at UIC, there was famously a woman in the graduate school who checked measurements of all margins and other spacing with a ruler and rejected dissertations which didn’t meet the strict requirements.
In the early 2000s there was a person at Indiana U who also did this. You had to get any dissertation approved by her before printing. And there was a ruler. Are PDFs accepted for dissertations yet?
My personal ETD "hilarity": there is/was a bug in Adobe Acrobat that caused the font I set my dissertation in to glitch/look jagged at exactly 100% zoom. If you shifted to 99.7% or 100.1%? It re-rendered and looked perfect. Only on Acrobat. Not in Chrome or Firefox or Preview or Foxit or anything else. I had to change the font for ETD to accept my document.
Changing the font doesn't sound like a big deal, and in principle it's easy to do, but it means none of the figures match the main text. The line breaks are now totally different, so those typeset line-endings and paragraphs that were rephrased to avoid awkward hyphenations? All gone.
For that and a few other more important reasons, I have two versions of my dissertation. There's the one hosted by ETD, and the one that I actually share and use professionally.