Hello,
I used the versioning tool to detect a bug in my app, creating a V2, then came back to the V1 to correct, and since that, I have an entire page that has a strange behavior: components and widgets have disappeared from the preview but are still in the tree of my page!! I had this two times, so I came back to V1, that creates a new version (I'm in the V4).
In debug mode, the components/widgets don't show!!!
Is this a bug of the FF interface? Am I not understanding right the Version system?