Commit
d617ef1dd356d2548bd9a44b1b91caeb6b8dd433
by Melanie Bats
[498259] Action buttons broken after switching tab
The action buttons list was cleared when the aboutToBeHidden method was called which means that when we switched to another tab the action buttons references where cleared. To fix the issue, the clear action is just moved to the dispose method. The issue is fixed for all the widgets able to define action buttons : list, hyperlink and label.