Well, I just updated my blog to WordPress 5.0.1 which seems to be some kind of hotfix. (Further reading shows it to be a Security Release.) As always, I backed up my files and database first. I have automatic updates disabled so I can do this beforehand. As I always do, I updated the local copy on my PC before updating my blog here.
At the same time, I noticed that the TinyMCE Advanced plugin I use also had an update to version 4.8.1. It now has a Hybrid Mode where it replaces the normal Paragraph block with a Classic Paragraph block. This allows the use of the classic interface while having access to all the newer Gutenberg block editor features. I’m playing with it now. So far, the update seems to have gone smoothly. 🙂