[Fix] Dynamic

embedding/scenario/playwright_dynamic_harness.py

@@ -719,6 +719,27 @@ def _install_target_seed_init_script(self) -> None:
         self._init_script_installed = True
 
     def _wait_for_service_worker(self, timeout_ms: int = 5000) -> bool:
+        # Content-script-only MV3 extensions (manifest without background.service_worker)
+        # never register a service worker. Once launch_persistent_context has loaded the
+        # extension, it is loaded — the content script runs when a matching page is
+        # navigated. Block here only for extensions that actually declare a worker;
+        # otherwise extension_loaded stays False forever and the run aborts at the
+        # extension_not_loaded gate.
+        if (
+            self._execution.get("extension_background_type") != "service_worker"
+            and self._context is not None
+            and bool(self._execution.get("extension_context_launched", False))
+        ):
+            self._execution["service_worker_count"] = 0
+            self._execution["service_worker_urls"] = []
+            self._execution["service_worker_ready"] = False
+            self._execution["extension_loaded"] = True
+            self._execution["extension_load_mode"] = "content_script_only"
+            prior_err = self._execution.get("extension_load_error")
+            if prior_err in {"playwright_sync_in_async_loop", "extension_service_worker_not_started_headless_mode_possible"}:
+                self._execution["extension_load_warning"] = str(prior_err or "")
+            self._execution["extension_load_error"] = ""
+            return True
         deadline = time.time() + (max(timeout_ms, 0) / 1000.0)
         while time.time() < deadline:
             workers = []
@@ -2188,6 +2209,10 @@ def close(self) -> dict:
             except Exception as exc:
                 cleanup_errors.append(f"remove_temp_dir_failed:{exc}")
         self._tmp_dirs.clear()
+        # The unpacked extension dir was just removed above; drop the cached root so the
+        # next _ensure_context re-extracts from the zip instead of pointing at a deleted
+        # path (which would surface as manifest_not_found on every scenario after the first).
+        self._extension_root = None
         if not had_user_data_tmp:
             self._execution["cleanup_removed_user_data_dir_not_applicable"] = True
         if not had_unpacked_tmp: