GenshinLyreMidiPlayer VS Windows UI Library

I have tried to fix this issue, by pausing the player before making changes to the slider when you are the one changing the value. The reason why this bug happens is because there is a playback watcher that moves the slider on its own while playing, and moving the slider does a race condition where this watcher will move the slider even if you have changed it, causing it to "spazz out." This was fixed in v1.7.3 but the latest version is v1.7.5 what version are you running? If it's not the latest, I suggest you get the latest version.

The download can be found in here https://github.com/sabihoshi/GenshinLyreMidiPlayer

The reason why I don't recommend Winui is the million bugs it has. See the github issues page. All Microsoft ui stuff sucks currently. But if you use WPF why not FluentWPF

Development for WinAppSdk and WinUI 3 is also very slow and Microsoft seems to not want to push it and invest more developers into it for some reason. They try to improve the framework, is just it's a small team. For example it was a headacke to apply the Mica backgrop and required unmanaged code, they made it simpler and reduced it to a line of code but it took months. I have 2 out of 7 issues fixed on WinAppSdk repository and 0 out of 8 issues fixed in the WinUI 3 repository (some of the older than a year). This are just my issues, there are many other opened by other developers. So yeah, it wasn't fun at all. PoweshellSDK had an issue with the Import-Module command and it wasn't fixed for more than a year and probably won't be ever fixed, but I'm glad I found a workaround, even more clean and more safe, otherwise I couldn't have added the posibility to uninstall and change Store apps.

Depends on how WinUI / WinAppSDK folks manage.

https://github.com/microsoft/microsoft-ui-xaml/issues

Click Download package - https://www.nuget.org/packages/Microsoft.UI.Xaml/2.7.3

The fps issue unfortunately seems to be currently a problem of the WinUI3 framework itself: Low frame rate · Issue #7373 · microsoft/microsoft-ui-xaml (github.com)

The WinUI 3 gallery has some keys that you can use, but I usually just use the search function on the WinUI repo (https://github.com/microsoft/microsoft-ui-xaml). Usually, the xaml files with v1 in it's name is the newer, windows 11 styled version of that control, and the control should have some keys in it

Can developers wanting to learn WinUI expect any support from Microsoft?

Can't speak for others but you can checkout the discussion threads on https://github.com/microsoft/microsoft-ui-xaml/discussions. I'm fairly optimistic as MS has started using WinUI 3 already, e.g. Phone Link, and the latest File Explorer in the Dev channel. Note that you are going to see haters leaving "DoOMeD!!1!1" comments anyways.