I KNEW I wasn’t crazy. WordPress offered an upgrade to fix some “bugs.”
Editor: Prevent certain HTML elements from being unexpectedly removed or modified in rare cases.
Pffffffffffffft. RARE CASES MY ASS!
I’ve been complaining for over a month that links have been disappearing, in some cases entire videos disappear. Let’s all hope that this has been fixed because I was getting very close to finding out who wrote the last version of wordpress and introducing them to my blowtorch and pliers.