https://bugs.winehq.org/show_bug.cgi?id=51564
--- Comment #25 from O. Nykyforchyn oleh.nyk@gmail.com --- (In reply to Mike Purtell from comment #24)
It was not accepted, but Alexandre Julliard has solved this other way, probably more conformant to the general line of Wine development.
Thus unix-16bit patch is superseded now, but there is another patch in the queue that solves an issue with colors and redrawing of background:
https://source.winehq.org/patches/data/218050
There is still no reaction to this patch. You could try it instead :)
where is unix-16bit.patch located? I'd like to try it in a build for wine-6.22