[Bug 35225] Some installers backgrounds has incorrect palette

http://bugs.winehq.org/show_bug.cgi?id=35225

--- Comment #4 from Andrey Gusev  ---
(In reply to comment #3)
> Hello Andrey,
>
> you forgot to tell that you ran the installer in a low res virtual desktop
> mode.
> I get the same behaviour when running the installer in virtual desktop mode
> 800x600.
> That kind of artifacting is expected there (downsizing a fixed width/height
> image) and has nothing to do with 'palette'.
>
> Run the installer in fullscreen or desktop mode with at least 1024x768 or
> better higher.
>
> I'm tempted to say 'invalid'.
>
> Regards

Yes, 1024x768 and higher makes much better, but still 1px size line is still
present anyway. And why that present just for some installers and not for all
in a row?