Inconsistent word wrapping in QTableView

When setting the section size on the horizontal header for a QTableView and then calling resizeRowsToContents(), the text in certain rows may not break at word boundaries and display text with ellipsis instead. This depends on the width of the text and the width set on the horizontal header.

Update:
The wordwrapping depends on the vertical and horizontal space available; if there is space to wrap the text it will do so, otherwise it will display the text with ellipsis.