Revert "fixes #43516"

This reverts commit c7218a88.

src/vs/workbench/parts/debug/electron-browser/debugService.ts

@@ -154,17 +154,11 @@ export class DebugService implements debug.IDebugService {
 		const session = <RawDebugSession>process.session;
 
 		if (broadcast.channel === EXTENSION_ATTACH_BROADCAST_CHANNEL) {
-			const initialAttach = process.configuration.request === 'launch';
+			this.onSessionEnd(session);
 
 			process.configuration.request = 'attach';
 			process.configuration.port = broadcast.payload.port;
-			// Do not end process on initial attach (since the request is still 'launch')
-			if (initialAttach) {
-				session.attach(process.configuration);
-			} else {
-				this.onSessionEnd(session);
-				this.doCreateProcess(process.session.root, process.configuration, process.getId());
-			}
+			this.doCreateProcess(process.session.root, process.configuration, process.getId());
 			return;
 		}