There isn’t much documentation available yet. All I can offer you is the GitHub space where the developers discussed the feature over few iterations. One of them left in the comments a list of ‘known issues’ he found.
If you find other issues, that are not listed yet, make sure to file them as ‘new issue’ on Github. This is part of the process of release and iterate and the faster it gets tested the sooner it’ll be fixed.
If you are using this plugin and feature on a live site, make sure you have backup. Using experimental stuff, that is not yet released on a production is not recommended.
Thanks Birgit,
They should have some text in the release post…, is it a bug, do we, the theme developers have to do something, what the hell ???