Bug: Incorrect mouse hover/click behavior on QList/QTree in animation

Platform: With QTitanRibbon 5.1.0 and Qt 5.13.1, 64bit.
Bug: when there are checkable items in QListView/QTreeView controls, and you hover over or click your mouse on them, you will see the follow scenario:
1: without animation, all behavior are correct.
when you enable the animation:
2: in win7/offfice2007/office2010 style, the behavior are wrong.
3: but in other office 2013/2016/photoshop are correct.

so I change a little in the controlsdemo example, and verify the issue with attached picture.

and here is my modification on mainwindow.cpp file for ControlsDemo example:

...
#include <QTreeView>
#include <QStandardItemModel>
...

MainWindow::MainWindow(QWidget* parent)
...

emit updateRecentFileActions(files);

// Frank start here
QStandardItemModel* pSourceTreeModel = new QStandardItemModel;
QStringList szHeaderNameList;
szHeaderNameList << "Source/Index" << "Name";
pSourceTreeModel->setHorizontalHeaderLabels(szHeaderNameList);
QStandardItem* pSourceItem = new QStandardItem("Item1");
pSourceItem->setCheckable(true);
pSourceItem->setTristate(false);
pSourceTreeModel->appendRow(pSourceItem);
pSourceItem = new QStandardItem("Item2");
pSourceItem->setCheckable(true);
pSourceItem->setTristate(false);
pSourceTreeModel->appendRow(pSourceItem);
pSourceItem = new QStandardItem("Item3");
pSourceItem->setCheckable(true);
pSourceItem->setTristate(false);
pSourceTreeModel->appendRow(pSourceItem);

QTreeView* treeView = new QTreeView(this);
treeView->setEditTriggers(QAbstractItemView::NoEditTriggers);
treeView->setModel(pSourceTreeModel);
treeView->setColumnWidth(0, 250);
treeView->setColumnWidth(1, 50);

setCentralWidget(treeView);
// Frank End here
}

when you hover the mouse on items, the check state will change or other unexpected response.

Thanks

Thank you very much for your comment. The error was reproduced and the fix will be available in the next version.