That's disappointing, but I guess it's the reality of today if you want a cross-platform application with full design freedom. I mean personally I think application developers should just pay for and hire development teams for native platforms, with one small team per platform you can do a lot.

But it also means compromising on your designs, I think, because I'm fairly sure it's a lot more difficult to implement a custom design on a Linux app. And Apple MacOS apps have certain design guidelines and Expectations as well.

I wonder if they could make this into more of a client-server architecture; a crossplatform server that runs as the back-end on the user's machine (or an embedded core), and a native client implemented for the specific OS. With an open protocol so that the community can build alternative clients, e.g. CLI based, or native with less bells and whistles, or more compact.