I’m finally delving into Gutenberg, and this is a major issue for me as well. As there is no “Gutenberg-style” WYSIWG-type option, it means that if you need to add a WYSIWIG field, you have to repeat all custom theme style programming for compatibility with both Gutenberg and TinyMCE — more than twice the code (since TinyMCE requires more). Are there any solutions in the works for this yet?
