Altered the method by which plugin UIs re-post carbon keyboard events.

modules/juce_audio_plugin_client/AU/juce_AU_Wrapper.mm

@@ -1479,7 +1479,7 @@ private:
                     lastEventTime = eventTime;
 
                     [[hostWindow parentWindow] makeKeyWindow];
-                    [NSApp postEvent: [NSApp currentEvent] atStart: YES];
+                    repostCurrentNSEvent();
                 }
             }
 

modules/juce_audio_plugin_client/RTAS/juce_RTAS_MacUtilities.mm

@@ -162,7 +162,7 @@ void forwardCurrentKeyEventToHostWindow()
     if (! isJuceWindow (w))
     {
         ActivateWindow (w, true);
-        [NSApp postEvent: [NSApp currentEvent] atStart: YES];
+        repostCurrentNSEvent();
     }
 }
 

modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.mm

@@ -254,7 +254,7 @@ bool forwardCurrentKeyEventToHost (Component* comp)
    #else
     NSWindow* win = [(NSView*) comp->getWindowHandle() window];
     [[win parentWindow] makeKeyWindow];
-    [NSApp postEvent: [NSApp currentEvent] atStart: YES];
+    repostCurrentNSEvent();
     return true;
    #endif
 }

modules/juce_audio_plugin_client/utility/juce_IncludeModuleHeaders.h

@@ -29,6 +29,11 @@ using namespace juce;
 #if JUCE_MAC && ! DOXYGEN
  #define Point     juce::Point
  #define Component juce::Component
+
+ namespace juce
+ {
+    void repostCurrentNSEvent();
+ }
 #endif
 
 extern AudioProcessor* JUCE_CALLTYPE createPluginFilterOfType (AudioProcessor::WrapperType);

modules/juce_events/native/juce_mac_MessageManager.mm

@@ -328,3 +328,11 @@ void MessageManager::broadcastMessage (const String& message)
                                                                    object: nil
                                                                  userInfo: info];
 }
+
+// Special function used by some plugin classes to re-post carbon events
+void repostCurrentNSEvent();
+void repostCurrentNSEvent()
+{
+    NSEvent* e = [NSApp currentEvent];
+    [[NSOperationQueue mainQueue] addOperationWithBlock: ^{ [NSApp postEvent: e atStart: YES]; }];
+}