setTabPositions leads to text overlapping

setting tab positons on QTextOption leads to text overlapping if tabs are too close together or if tabs are out of order (e.g. postion 10, then position 8).

While I appreciate that Qt isn't attempting to be a word-equivalent, it is difficult meaningfully use the setTabPositions with this behaviour. Either an option such that if text extends past a tab position, that position is skipped is needed, or the default behaviour changed to better match the meaning of tab positions within other rich text systems.