Terox3 Could you explain more precisely what you mean? What games are you talking about?
Currently there is no way to disable Steam wishlist synchronization. The only workaround is to make your profile private, so our bot won't be able to see which games you have on your Steam wishlist.
But is some games keep returning after sync with Steam, that means that you have these games on your Steam wishlist, and you need to remove them from there.