Fix #76105

src/vs/workbench/contrib/extensions/node/extensionsWorkbenchService.ts

@@ -861,7 +861,7 @@ export class ExtensionsWorkbenchService extends Disposable implements IExtension
 			this.queryGallery({ names, ids, pageSize: 1 }, CancellationToken.None);
 		} finally {
 			this.installing = this.installing.filter(e => e !== extension);
-			this._onChange.fire(extension);
+			this._onChange.fire(this.local.filter(e => areSameExtensions(e.identifier, extension.identifier))[0]);
 		}
 	}
 

src/vs/workbench/services/extensions/electron-browser/remoteExtensionManagementIpc.ts

@@ -70,10 +70,12 @@ export class RemoteExtensionManagementChannelClient extends ExtensionManagementC
 		if (!compatible) {
 			return Promise.reject(new Error(localize('incompatible', "Unable to install extension '{0}' as it is not compatible with VS Code '{1}'.", extension.identifier.id, this.productService.version)));
 		}
-		const local = await this.downloadAndInstall(extension, installed);
-		const workspaceExtensions = await this.getAllWorkspaceDependenciesAndPackedExtensions(local.manifest, CancellationToken.None);
-		await Promise.all(workspaceExtensions.map(e => this.downloadAndInstall(e, installed)));
-		return local;
+		const manifest = await this.galleryService.getManifest(compatible, CancellationToken.None);
+		if (manifest) {
+			const workspaceExtensions = await this.getAllWorkspaceDependenciesAndPackedExtensions(manifest, CancellationToken.None);
+			await Promise.all(workspaceExtensions.map(e => this.downloadAndInstall(e, installed)));
+		}
+		return this.downloadAndInstall(extension, installed);
 	}
 
 	private async downloadAndInstall(extension: IGalleryExtension, installed: ILocalExtension[]): Promise<ILocalExtension> {