the previous attempt at fixing the issue with form that have a rich editor in them wasn't addressing the actual issue.
the issue is that when you have a working rich editor in the form, sometimes the form schema is created before the click record action is handled, which makes the form use the obsolete $editModalRecordId.
the form didn't have an issue before adding mount with $form->fill() only because the rich editor was broken.
and when you fix it by adding the mount method, it starts messing up the flow. if you don't set the $editModalRecordId to null you might feel like you're avoiding some issues, but the form is using old $editModalRecordId for building schema.
here I've manually triggered a schema creation inside the click handler to fix the issue, but i don't like it.
would appreciate if you have better solutions.