Visit a populated node that supports wysiwyg, that contains a populated body field, with a populated summary .
Click the body source button and add a character. You should observe that the summary field blanked out.
Click out of source view, the summary field is still blank.
Click into the body field again and make a minor edit. You now see the original previous text visible in the summary field again.
Avoid hiding the summary field content while editing the body field.
Closed: cannot reproduce
2.4
Code
Sorry, this was a conflict with a custom summary autofill script. Closing ticket.