[Bug 37994] New: AVRStudio 4.18: Editor window text rendered incorrectly (transparent tab characters)

https://bugs.winehq.org/show_bug.cgi?id=37994

Bug ID: 37994
           Summary: AVRStudio 4.18: Editor window text rendered
                    incorrectly (transparent tab characters)
           Product: Wine
           Version: 1.5.20
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdi32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 50625
  --> https://bugs.winehq.org/attachment.cgi?id=50625
Screenshot showing transparent tab characters

Within the main editor window of AVRStudio, tab characters are not drawn in
background color and remain transparent, showing artefacts of the panes
underneath.

This makes the application unusable as the editor shows incorrect text
characters or graphic elements wherever a transparent tab character appears.

This bug was introduced in wine version 1.5.20 with the changes to gdi32.dll,
in particular the changes to GetTextExtentExPoint.

The issue can be fixed for later versions of wine up to 1.7.35 by reverting to
the 1.5.19 gdi32 versions of driver.c, font.c and freetype.c.

The AVRStudio 4.18 installation .exe is freely available here (requires email
registration):
http://www.atmel.com/tools/STUDIOARCHIVE.aspx

Checksum:
f2d1e92ab59f06d5f4d029736afc9b814fdd2e1e  AVRStudio4.18Setup.exe

Terminal output doesn't show anything useful. See screenshot instead.