id summary reporter owner description type status priority milestone component version resolution keywords cc 13239 Source view has no word-wrapping in Firefox now Chris Graham "The source view has no word-wrapping in Firefox, as of very recently. Because Firefox just fixed a long-standing CSS implementation bug: https://bugzilla.mozilla.org/show_bug.cgi?id=82711 Other browsers still have the bug. Your CSS has white-space:nowrap cascading through. You therefore need to probably put an override on the textarea element. Problem is reproducable on your latest demo." Bug closed Normal UI : Source View duplicate