Fixes #59102: Tasks with scope = the last folder in workspaceFolders array do not show up

src/vs/workbench/parts/tasks/electron-browser/task.contribution.ts

@@ -494,13 +494,10 @@ class TaskService implements ITaskService {
 		this._outputChannel = this.outputService.getChannel(TaskService.OutputChannelId);
 		this._providers = new Map<number, ITaskProvider>();
 		this._taskSystemInfos = new Map<string, TaskSystemInfo>();
-		this.configurationService.onDidChangeConfiguration(() => {
+		this.contextService.onDidChangeWorkspaceFolders(() => {
 			if (!this._taskSystem && !this._workspaceTasksPromise) {
 				return;
 			}
-			if (!this._taskSystem || this._taskSystem instanceof TerminalTaskSystem) {
-				this._outputChannel.clear();
-			}
 			let folderSetup = this.computeWorkspaceFolderSetup();
 			if (this.executionEngine !== folderSetup[2]) {
 				if (this._taskSystem && this._taskSystem.getActiveTasks().length > 0) {
@@ -524,6 +521,15 @@ class TaskService implements ITaskService {
 			this.updateSetup(folderSetup);
 			this.updateWorkspaceTasks();
 		});
+		this.configurationService.onDidChangeConfiguration(() => {
+			if (!this._taskSystem && !this._workspaceTasksPromise) {
+				return;
+			}
+			if (!this._taskSystem || this._taskSystem instanceof TerminalTaskSystem) {
+				this._outputChannel.clear();
+			}
+			this.updateWorkspaceTasks();
+		});
 		this._taskRunningState = TASK_RUNNING_STATE.bindTo(contextKeyService);
 		lifecycleService.onWillShutdown(event => event.veto(this.beforeShutdown()));
 		this._onDidStateChange = new Emitter();