Issue with 46469720 HorizontalHeader RowHeights

[korl1n]

Incorrect row heights for horizontal header.
If I make header like this:
for (int i = 0; i < 3; ++i){
int count = 6;
hHeader->setSpan(0, count * i, 1, count);
}
for (int i = 0; i < 3; ++i){
int count = 6;
hHeader->setCellLabel(0, count * i, QString("top_header_%1").arg(i+1));
for (int j = 0; j < count; ++j){
hHeader->setCellLabel(1, (count * i)+j, QString("bottom_header_%1").arg(j+1));
}
}
Instead of this :
hHeader->setSpan(0, 0, 2, 0);
hHeader->setSpan(0, 1, 2, 0);
hHeader->setSpan(0, 2, 2, 0);
hHeader->setSpan(0, 3, 1, 2);
hHeader->setSpan(0, 5, 2, 0);

    hHeader->setCellLabel(0, 0, "cell1");
    hHeader->setCellLabel(0, 1, "cell2");
    hHeader->setCellLabel(0, 2, "cell3");
    hHeader->setCellLabel(0, 3, "cell4");
    hHeader->setCellLabel(1, 3, "cell5");
    hHeader->setCellLabel(1, 4, "cell6");
    hHeader->setCellLabel(0, 5, "cell7");

Bottom header doesn't show up. Could be "fixed" with setrowheight, but total height of header levels is not equal to sum of heights of that levels