I use the setting "Do full justification the way WordPerfect 6.x for Windows does." Some times, despite enabling this option, full justification is done in the standard way rather than the WordPerfect 6.x way. Turning the option off and on again doesn't fix the problem. Instead, to fix the problem, I have to create a new document. That's a very bad solution because I have to recreate the heading structure, which is a mess.

Any ideas what I can do besides creating a new document?