[Bug 52903] New: Resizing Dn-FamiTracker fails to redraw pattern editor and status bar

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52903

            Bug ID: 52903
           Summary: Resizing Dn-FamiTracker fails to redraw pattern editor
                    and status bar
           Product: Wine
           Version: 7.7
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: nyanpasu64 at tuta.io
      Distribution: ---

Created attachment 72288
  --> https://bugs.winehq.org/attachment.cgi?id=72288
Dn-FamiTracker window not redrawn on Arch Linux Wine 7.7, after resizing with
bottom-right corner

- Download Dn-FamiTracker
(https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker/releases/download/Dn0.4.0.1/Dn-FamiTracker_v0401_x64.7z)
and extract Release/Dn-FamiTracker.exe.
- Run the program on Wine 7.7 on Arch Linux kwin_x11 with compositing on.
- Maximize and un-maximize it, or alternatively resize it.

The blue line in the program's bottom half should remain vertically centered.
Instead after maximizing, I get two blue lines (one stale image in the top half
of the window, and one redrawn blue line in the center). The stale image goes
away when you click on the canvas or press an arrow key. And when unmaximizing,
the blue line is below the center of the screen or off the bottom entirely. The
line is redrawn at its correct position when you click on the canvas or press
an arrow key.

Additionally, by slowly resizing the window's bottom-right corner, you can get
the status bar to draw dozens of drag corners on top of each other, much like
foobar2000.

This occurs on Wine 7.7 (Arch Linux) (resizing does not redraw the window), and
to a lesser extent on macOS Wine (run
https://cdn.discordapp.com/attachments/219258602450452486/963561317187326082/Dn-FamiTracker.exe
to workaround https://bugs.winehq.org/show_bug.cgi?id=49802) as well (resizing
intermittently redraws the window). The bug also occurs on Bottles Caffe 7.2,
but not 7.0 and below. On Bottles Caffe 7.0 and Bottles Vaniglia 6.x, when
maximizing or restoring the window, I see a flicker of stale image, followed by
a proper redraw. I don't know whether the Wine ≤7.0 behavior was correct
(matching Windows), or an extra delayed redraw masking the missing redraw.

Unlike foobar2000, Dn-FamiTracker is open-source (though depends on MFC and is
spaghetti code):
https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker/tree/Dn0.4.0.1
and https://github.com/Dn-Programming-Core-Management/Dn-FamiTracker

The same error appears on Wine 7.7 and 7.2 but not 7.0, when testing
0CC-FamiTracker 0.3.15.3 (http://hertzdevil.info/programs/0CCft_v0315r3.7z).
I've never seen either Dn-FamiTracker or 0CC-FamiTracker fail to redraw on real
Windows 7 or 10.

This may be related to Bug 52515 (foobar2000), but I reported that bug on Wine
7.0 (which I think is immune to this bug). It may be the same bug anyway, but
either my older report has the wrong version or Bottles Caffe 7.0 differs from
Arch Wine. If I try running foobar2000's installer in Bottles to test old Wine
versions, the installed foobar2000 program crashes on startup, so I can't test
if it broke between Wine 7.0 and 7.2 as well.

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