When selecting the 'Chart' element of a pie chart in chart edit mode, the sidebar shows the area and line content panels, which it shouldnt, as the the 'format selection' option is disabled when in this selection and changing anything in area and line doesnt change anything in the chart.
Build ID: cbf3fac0a5a1be34b2e1a58da959debd24ebc017
TinderBox: Linux-rpm_deb-x86_64@70-TDF, Branch:master, Time: 2015-09-17_07:03:22
Locale: en-US (en_US.UTF-8)
I actually have no idea what the Chart element represents. Internally the type seems to be OBJECTTYPE_DIAGRAM. That one has already some special handling in the area and line panel for the other chart types.
Markus Mohrhard committed a patch related to this issue.
It has been pushed to "master":
don't show area and line panel in pie chart Chart selection, tdf#94320
It will be available in 5.1.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.