In a qml TableView with a QSortFilterProxymodel, sorting leads to unexpected hover events

In a qml TableView with a QSortFilterProxymodel, sorting leads to unexpected hover events

See attached .gif. When sorting column 1 suddenly another column gets a hover event and displays the tooltip.

Tooltip shoud only be shown when the item at index is hovered:

ToolTip {
   text: "index: " + index
   delay: 1
   visible: hoverHandler.hovered
} 

Workaround:

Set model of TableView to undefinded before sorting and reset after.