As of Windows App SDK 1.2 the Touch keyboard does not pop up automatically when a user taps a text entry field on Desktop when no keyboard is present, combining multiple other threads together I have put together a project that re-enables this functionality.
Troubleshooting migration from Xamarin to MAUI
The Xamarin project showcases how to print HTML utilizing Renderers (Now deprecated) The MAUI project showcases how to print HTML utilizing partial classes and platform specific code. (Currently works for Android, IOS should be the same process though)