the naming of the patches on GOG should be 1.04+ for the patch 1.04 that had problems on windows. And the hotfix for that is named 1.04. So if your version says 1.04 without the + sign at the end, you should have the hotfixed version of the 1.04 patch. I have no idea where 1.04.2 comes from, maybe that is how the hotfix is named on steam. Ask on the discord if they were talking about the steam version.
I'd take your word for it, only none of the problems in the game have been fixed, which leads me to believe that the patch hasn't gone through on Gog.
I submitted a ticket to see what the deal is.
It definitely could be that something went wrong again. It's just the fact that the version 1.04 here on GOG without the + sign came out after it was announced that the problems with windows version are fixed, so it should be the right hotfixed version, but since you said the problmes are not fixed, it sounds like there could be a problem with it. If you get answer for your ticket, let us know what the situation is.