https://www.reddit.com/r/dotnet/comments/bmq1py/is_wpf_going_to_be_cross_platform_in_net_5/

6 months ago

No. The whole point is to move WPF and WinForms to be able to target .Net Core, that's it.
Just because something targets .Net Core doesn't necessarily mean it is cross platform.
There is just too much existing software using WPF and WinForms and the point is to have
a migration path to newer technologies. .Net framework is not getting any more new features
so if MS wants WPF and WinForms to live on, they need to make it work for core.

Maybe one day they will be cross platform, but right now they are just too reliant on Windows
specific features. At this time they have explicitly said they do not want PRs adding cross platform
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capability. Maybe sometime in the future they will work on cross platform capability, or maybe
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a group forks it, who knows.

I'd love to see WPF being cross platform. While it has a steep learning curve, you can do
some great things with it.