Created attachment 127178 [details] chart.ods the file with a chart to reproduce the issue Steps to reproduce : Open chart.ods (the attached file) and either double click on the chart or try to edit it. The chart now is displayed as a gray box. The chart needs to be visible while editing is going on ideally. The chart comes back after clicking on some blank cell though.
The issue was observed in latest master built on Fedora 24 64bit.
Update : I tested in LO 5.2.1.2, and the issue is not present.
*** This bug has been marked as a duplicate of bug 102201 ***