diff --git a/browser/devtools/webconsole/test/browser_console_consolejsm_output.js b/browser/devtools/webconsole/test/browser_console_consolejsm_output.js
index 44f09db4fb8c..17b299598184 100644
--- a/browser/devtools/webconsole/test/browser_console_consolejsm_output.js
+++ b/browser/devtools/webconsole/test/browser_console_consolejsm_output.js
@@ -91,7 +91,7 @@ function test()
         },
         {
           name: "console.dir output",
-          consoleDir: "XULDocument {",
+          consoleDir: /XULDocument .+ chrome:\/\/.+\/browser\.xul/,
         },
         {
           name: "console.time output",
diff --git a/toolkit/devtools/DevToolsUtils.js b/toolkit/devtools/DevToolsUtils.js
index 4dfa477b9034..d920dff6df24 100644
--- a/toolkit/devtools/DevToolsUtils.js
+++ b/toolkit/devtools/DevToolsUtils.js
@@ -260,6 +260,11 @@ this.isSafeJSObject = function isSafeJSObject(aObj) {
     return true; // aObj is not a cross-compartment wrapper.
   }
 
+  let principal = Services.scriptSecurityManager.getObjectPrincipal(aObj);
+  if (Services.scriptSecurityManager.isSystemPrincipal(principal)) {
+    return true; // allow chrome objects
+  }
+
   return Cu.isXrayWrapper(aObj);
 };
 
diff --git a/toolkit/devtools/server/actors/script.js b/toolkit/devtools/server/actors/script.js
index aa431a62f7e7..e8a64484460c 100644
--- a/toolkit/devtools/server/actors/script.js
+++ b/toolkit/devtools/server/actors/script.js
@@ -3656,7 +3656,7 @@ DebuggerServer.ObjectActorPreviewers.Object = [
   },
 
   function DOMNode({obj, threadActor}, aGrip, aRawObj) {
-    if (!aRawObj || !(aRawObj instanceof Ci.nsIDOMNode)) {
+    if (obj.class == "Object" || !aRawObj || !(aRawObj instanceof Ci.nsIDOMNode)) {
       return false;
     }