id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc 5880,Undo causes javascript errors,Arne,,"1. Go to CK editor demo page.[[BR]] 2. Clear editor content[[BR]] 3. Type a word[[BR]] 4. Select and copy the word[[BR]] 5. Paste it several times on the same line.[[BR]] 6. Hit Ctrl-Z to undo.[[BR]] 7. Javascript errors should be generated. Probably related to range code.[[BR]] Tested on Windows, Firefox 3.6.3[[BR]] Editor version : 3.3.1",Bug,confirmed,Normal,,General,3.1,,,