https://bugs.winehq.org/show_bug.cgi?id=51923
--- Comment #11 from sonicminecraftfan99@gmail.com --- (In reply to nekoNexus from comment #10)
Ah, that's good to know; should be in a FAQ :p I assume that it wouldn't support updates? Good to know regardless though, thanks.
Can the appx even be downloaded or does this specific instance require copying from a Windows installation?
The appx can optionally be obtained using this guide: https://www.linuxadictos.com/en/uwp-como-ejecutar-este-tipo-de-aplicaciones-... which uses a tool to directly pull an appx file from the Microsoft Store website granted you have the link to your app's store page. Surprisingly it also works with Xbox Store apps since they are also the same format(Even the uncompressed files give a Windows executable from the game I've tried it on, which was an exclusive game known as FS Sandbox)
And yes, unfortunately updates aren't supported so every time a new one is released you'll have to redownload the entire appx.