http://bugs.winehq.org/show_bug.cgi?id=23768
--- Comment #8 from Mark K markk@clara.co.uk 2013-12-06 05:51:14 CST --- To clarify comment 6, the image in 4aces.hlp displays correctly in the *Windows* version of WinHlp32.exe, not Wine winhlp32.exe.
It displays correctly when you use WinHlp32.exe taken from a Windows XP installation and run that in Wine. I just checked in a Windows 7 VM with the Windows 7 WinHlp32 download from http://www.microsoft.com/en-US/download/details.aspx?id=91 and it displays correctly there too.
I'm not sure that 4aces.hlp could be considered broken since it works with Windows WinHlp32. Maybe some undocumented feature?