Created attachment 158722 [details] Screen Captures of chart as displayed in Versions 5.4.7.2 and 6.4.1.2
Created attachment 158723 [details] The Calc File used to demonstrate the bug
Thanks for reporting! Confirmed, and bibisected to the same commit as bug 129095. Closing as duplicate. *** This bug has been marked as a duplicate of bug 129095 ***