[Bug 43998] treeview not drawn correctly

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=43998

--- Comment #3 from Rafał Mużyło <galtgendo at o2.pl> ---
...a bit more info from a different app suffering from the same problem:

There, the treeview is contained within a scrolled window (H&V).
Anyway, it seems that the difference between the row you think you click in and
the row you've actually clicked is a rounding problem.
What I've seen is that there the treeview content looked like it started just
below the line of combined height of a single arrow and the thumb.
Yet, the clicks on the content acted as if the content started at the proper
place - the top of the widget.

...OK, I found that out yesterday and it seems I've already forgotten why I did
I called that 'a rounding problem' (cause it wasn't just a random
thought)...will write more once I remember.

One more thing (but this might be already fixed, as I'm still on 2.22): the
content tooltip interacts weirdly with scroll bar. While the tooltip itself is
quite small, it seems to cover a part of the treeview by an invisible window,
that prevents thumb being redrawn as it passes through the covered part - once
it passes that area or the tooltip is triggered on a different part of the
treeview, the thumb will be redrawn correctly.

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