QTextTable empty headers on pdf export, when sets QTextTableFormat::setHeaderRowCount and tables is in different QTextFrames.

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I have an issue with printing my tables into pdf using QTextDocument print function. In my example I use QPrinter, but result the same on different methods of printing(QPainter etc.).
So let me explain my issue step by step:
1) I create empty QTextDocument.
2) In root QTextFrame (that I get using rootFrame function from QTextDocument), I insert 3 text frames one by one (using QTextCursor insertFrame)
3) I insert QTextTables into each 3 frame (using QTextCursor insertTable)
3.1) I set QTextTableFormat for each tables with atributes setHeaderRowCount(1) that will automaticaly repead me first row in each page on printing.
4) I print this into pdf document;

Expectation:
When my tables are not fit into page, they divided and repeads first row correctly on each tables breaks.

Actual result:
When my tables are not fit into page, they divided and first row repeads correctly only for first table in first frame. The other two are repeads with blank spaces instead of header row, or paint two headers on on top of another. (Please see attached results PDF).

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My investigation:

I debug a little, and looks like the issue starts from this method:

948 void QTextDocumentLayoutPrivate::drawFrame(const QPointF &offset, QPainter *painter,
949 const QAbstractTextDocumentLayout::PaintContext &context,
950 QTextFrame *frame) const

When it starts to call this method:

1215 void QTextDocumentLayoutPrivate::drawFlow(const QPointF &offset, QPainter *painter, const QAbstractTextDocumentLayout::PaintContext &context,
1216 QTextFrame::Iterator it, const QList<QTextFrame *> &floats, QTextBlock *cursorBlockNeedingRepaint) const

And it call QTextDocumentLayoutPrivate::drawFrame again, in some moment of recursion the "const QPointF &offset" become wrong number.

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Also I attached small examle where this issue reproduced.