Visual Studio stuck on fullscreen UWP app error - visual-studio

Question

When debugging a fullscreen Win2d UWP app from VS and my code has an error, the app window gets frozen "always-on-top" style, forcing me to reboot or log out of windows. The app was still showing the blue startup image with no top bar access.
I tried Alt+F4, Shift+Win+Enter, Alt+Tab. The app stays fullscreen and on top even after closing it. The Win key reveals the taskbar but closing VS fails because it creates an unreachable confirmation dialog about stopping the debugger. Task manager is also unusable, hidden behind the frozen app. I've removed this line for now, but I want to start in fullscreen always.
ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.FullScreen;
Here's example code using the Win2d quick start guide that causes the problem for me:
MainPage.xaml
<Page
x:Class="Example.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:Example"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:canvas="using:Microsoft.Graphics.Canvas.UI.Xaml"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid>
<canvas:CanvasControl x:Name="canvas" Draw="canvas_Draw"/>
</Grid>
</Page>
MainPage.xaml.cs
using Microsoft.Graphics.Canvas.UI.Xaml;
using System;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml.Controls;
namespace Example
{
public sealed partial class MainPage : Page
{
public MainPage()
{
ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.FullScreen;
this.InitializeComponent();
}
private void canvas_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
throw new Exception("error in my code");
}
}
}