diff --git a/Libraries/ReactNative/PaperUIManager.js b/Libraries/ReactNative/PaperUIManager.js
index c468958e566320..87cc101db310d4 100644
--- a/Libraries/ReactNative/PaperUIManager.js
+++ b/Libraries/ReactNative/PaperUIManager.js
@@ -34,6 +34,7 @@ function getConstants(): Object {
 function getViewManagerConfig(viewManagerName: string): any {
   if (
     viewManagerConfigs[viewManagerName] === undefined &&
+    global.nativeCallSyncHook && // If we're in the Chrome Debugger, let's not even try calling the sync method
     NativeUIManager.getConstantsForViewManager
   ) {
     try {
diff --git a/Libraries/Utilities/deprecatedPropType.js b/Libraries/Utilities/deprecatedPropType.js
index 1801f98cb1c2dd..0a0fc69aab2a0e 100644
--- a/Libraries/Utilities/deprecatedPropType.js
+++ b/Libraries/Utilities/deprecatedPropType.js
@@ -21,7 +21,7 @@ function deprecatedPropType(
     // Don't warn for native components.
     if (
       global.RN$Bridgeless !== true &&
-      UIManager.hasViewManagerConfig(componentName) &&
+      !UIManager.hasViewManagerConfig(componentName) &&
       props[propName] !== undefined
     ) {
       console.warn(