The right-hand side of my screen disappears as I’m writing in Gutenberg. Can’t reset it and have to start again. Very frustrating!
I answered with the following when you emailed me about this. It does sound very frustrating. Unfortunately, it sounds like once again, your theme is the culprit.
It appears your theme does not have proper support for Gutenberg, which is why your content is appearing to be cut off when you’re editing in the Gutenberg block editor.
It’s likely all your content is actually there, it’s just being obscured because your theme doesn’t support Gutenberg properly.
Your best bet is to reach out to the creators of your theme and report this issue. Hopefully, they’re aware of the issue and have already created a fix.
Hope this helps!