QTreeView selectAll after hideColumn won't work

Calling QTreeView::selectAll () method after QTreeView::hideColumn ( int column ) won't work.

Occured to me on QTreeView with SelectionMode = MultiSelection , SelectionBehavior = SelectRows
CTRL-A shortcut won't work either.

workaround :

• replacing treeView->hideColumn(0); by treeView->header()->resizeSection(0,0);