Using v2.8 b 1087

Attached file has four tabs, first is datamanager, then two have single histogram and last has a chart.
Tabs 3 and 4 are grouped together in a group tab called group 5.

Open tab quantity split and it shows a stacked bar chart
Now click Tab 5 and it changes tab titles to show the two tabs in it and displays the company split simple bar chart.

Go to menu item Tab
Select Tab settings>
Then Tab bar>
Then Each tab bar visibility

Level 1 and level 2 are ticked

Click "Apply to all tabs"

Then click anywhere on chart to make menu go away

Then go back to qty split tab and it has turned into the same chart as the company split.

I was just trying to get the tab/sub tab headings to be same on each sheet but it has changed all the chart details as well.