Update executormarionette.py
diff --git a/tools/wptrunner/wptrunner/executors/executormarionette.py b/tools/wptrunner/wptrunner/executors/executormarionette.py
index bbce86f..8301ba1 100644
--- a/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -642,7 +642,7 @@
 
 async function loadDevTools() {
     const target = await TargetFactory.forTab(window.gBrowser.selectedTab);
-    await gDevTools.showToolbox(target, "webconsole", "bottom");
+    await gDevTools.showToolbox(target, "webconsole", "window");
 }
 
 loadDevTools().catch(() => dump("Devtools failed to load"))