I'm currently in the process of creating a piece of development software and needed a cross-platform GUI environment to do it with.
I first tried Maui because its seemingly so highly rated and recommended. It turned out to be a complete nightmare. Even just installing it didn't just work, I had to spend 2-3 hours just to get that going and then when trying some basic things for my UI it turned out to just not be supported.
The next on the list was AvaloniaUI and wow, it was the complete opposite experience. Installation was a breeze and with only a marginal bit of googling I managed to do all kinds of things such as making a top-most only borderless transparent window etc.
The interface in Visual Studio could be a bit better overall, but compared to Maui its light-years ahead.