As many Sigil users know, Sigil has a WYSIWYG editor portion. It’s also in my mind substandard. It gets the job done for quick edits but it’s not as full featured as I’d like. Especially when I’m used to using editors like WordPress’s editor.
Back in 2012 I started researching updating the BookView editor. This was a planned feature for the 0.6.0 but was ultimately dropped due to issues unresolvable issues.
As I said they never made it into any release because they just weren’t working like I needed them to. That’s not to say they aren’t terrific editors and provide all the functionality I wanted. They just didn’t perform like I wanted.