Created attachment 166474 [details] dump with debug symbols The application crashed in QHashPrivate::iterator<QHashPrivate::Node<QModelIndex, QSortFilterProxyModelPrivate::Mapping*> >::node when toggling the tree view. Full dump attached
I also have this crash in 6.0.3 using openSUSE Tumbleweed.
Created attachment 168008 [details] Backtrace
*** This bug has been marked as a duplicate of bug 479235 ***