After a bad experience with Auto-updating last fall, I wrote an article about it: Document Geek: How to Get the Old Version of Acrobat back
I followed my own advice and turned OFF auto updates.
But now I have version 2019.012.20034, which is one below the latest version: Release Notes | Adobe Acrobat, Reader
Am I correct in assuming that turning OFF auto updates only turn off the Optional updates, and not the continuous updates?