I started building some blocks with this beta version, it's obviously buggy, but when done, it will be great.

- You can't see the blocks html code.
- Any changes to any of the blocks attributes (parameters) and you will get "possibly not saved message", even though the page/post is saved.
- The Additional CSS field in a block NEVER saves your custom CSS.
- Duplicating and item will result in having the duplicate item "under" the copied block if that makes any sense, so by moving the block upor down will then see the duplicated copy.
- Making a Block Reusable, which is a huge deal for Gutenberg, is a joke right now.
- Not having the ability to have separate rendering code for the backend and frontend, like the Lazy Blocks plugin, can be an issue in some cases. Elliot has to check out that plugin and incorporate some of its' finer points.

And all these, with just about 3 hours of playing with it yesterday. Their support has not replied to me yet with all these issues, I'm sure they are busy. When everything gets fixed with ACF's ability to have Accordions, Tabs, and the rest of unbelievable fields and features and options, the possibilities will be endless. The ability to do things with php, is a big plus for me.

Until yesterday, I was using "Lazy Blocks" to create my blocks, which is much easier to create blocks, but with ACF, you can do much, MUCH more.

Overall though, tools like this, I got converted from a Gutenberg hater, to a Gutenberg supporter, and very hopeful for the future and the potential of things to come. Very soon and just for the database bloat, doing things with custom fields will seem stupid, not to mention data migration issues with custom fields as oppose to json.