Yup, and if you're on a platform without GoG Galaxy, you should refund and get it on a better supported platform that actually provides patches.
I choose to use the GOG Downloader client files and manage my own updates. There are a lot of problems caused by auto-updates and by using the cloud. Maybe someday Galaxy will be a clean machine (Steam too, for that matter), but currently that is not the case.
I hadn't checked for a few days but last patch I installed was 1.04something (any idea where I can find the version my game is currently running), but today the oldest patch is 1.06 so I'm missing a patch or two from between my last uodate and now.
Where can I find the missing patches??
If you are determined to patch it yourself, then I have seen where people have opened support tickets and the staff have sent them the missing patches, on request.