Merge pull request #19619 from unoplatform/mergify/bp/release/stable/…

…5.6/pr-19614

fix(vs): don't reload the profile observer on initial solution open (backport #19614)

src/Uno.UI.RemoteControl.VS/DebuggerHelper/ProfilesObserver.cs

@@ -34,6 +34,8 @@ internal class ProfilesObserver : IDisposable
 	private readonly Func<string?, string, Task> _onDebugFrameworkChanged;
 	private readonly Func<string?, string, Task> _onDebugProfileChanged;
 	private Func<Task> _onStartupProjectChanged;
+	private object[] _existingStartupProjects = [];
+
 
 	private string? _lastActiveDebugProfile;
 	private string? _lastActiveDebugFramework;
@@ -82,9 +84,6 @@ AsyncPackage asyncPackage
 		_ = ObserveStartupProjectAsync();
 	}
 
-	object[]? _existingStartupProjects = [];
-
-
 	private async Task ObserveStartupProjectAsync()
 	{
 		while (!_isDisposed)
@@ -99,7 +98,12 @@ private void TryUpdateSolution()
 	{
 		if (_dte.Solution.SolutionBuild.StartupProjects is object[] newStartupProjects)
 		{
-			if (!newStartupProjects.SequenceEqual(_existingStartupProjects))
+			if (_existingStartupProjects.Length == 0)
+			{
+				// We're starting up, no need to re-create the observer
+				_existingStartupProjects = newStartupProjects;
+			}
+			else if (!newStartupProjects.SequenceEqual(_existingStartupProjects))
 			{
 				_debugLog("Startup projects have changed, reloading observer");
 
@@ -114,6 +118,15 @@ private void TryUpdateSolution()
 				_ = ObserveProfilesAsync();
 			}
 		}
+		else
+		{
+			if (_existingStartupProjects.Length > 0)
+			{
+				_ = _onStartupProjectChanged();
+			}
+
+			_existingStartupProjects = [];
+		}
 	}
 
 	public async Task ObserveProfilesAsync()

src/Uno.UI.RemoteControl.VS/EntryPoint.ActiveProfileSync.cs

@@ -321,6 +321,12 @@ previousTargetFrameworkIdentifier is WasmTargetFrameworkIdentifier
 
 	private async Task OnStartupProjectChangedAsync()
 	{
+		if (_dte.Solution.SolutionBuild.StartupProjects is null)
+		{
+			// The user unloaded all projects, we need to reset the state
+			_isFirstProfileTfmChange = true;
+		}
+
 		if (!await EnsureProjectUserSettingsAsync() && _debuggerObserver is not null)
 		{
 			_debugAction?.Invoke($"The user setting is not yet initialized, aligning framework and profile");