QHeaderView::setResizeContentsPrecision(0) doesn't work for vertical header

Function QHeaderView::setResizeContentsPrecision() was designed to limit an amount of data used for view's cell size adjustments (to improve performance on large datasets).

Usage of setResizeContentsPrecision(0) - with special value 0 - will take only visible area into account according to documentation. But it works only for horizontal headers and there are no hint about it in documentation. It says opposite insead that "This value is used in ... QTableView::sizeHintForRow()". So I propose to add this hint to current documentation.

I'm reporting it as documentation bug as I see some people think it shouldn't work for vertical headers because scroll bar size will be incorrect. I personally disagree with it and think this is a bug in the feature implementation because scroll bar size may be calculated based on rows number not on row's sizes for this case (and also I tried to change row height dynamically calling setRowHeight() from models data() method - it works well and fast as it is called for visible rows only)

So, probably it should be reclassified and fixed as a bug in QHeaderView::setResizeContentsPrecision() implementation to make secial value 0 applicable to vertical headers either.