diff --git a/source/utils/CarlaJuceUtils.hpp b/source/utils/CarlaJuceUtils.hpp
index b1bcf00e8..d0f678de4 100644
--- a/source/utils/CarlaJuceUtils.hpp
+++ b/source/utils/CarlaJuceUtils.hpp
@@ -31,6 +31,10 @@
 #define CARLA_JOIN_MACRO_HELPER(a, b) a ## b
 #define CARLA_JOIN_MACRO(item1, item2) CARLA_JOIN_MACRO_HELPER(item1, item2)
 
+/** Same but for joining 3 items */
+#define CARLA_JOIN_MACRO_HELPER3(a, b, c) a ## b ## c
+#define CARLA_JOIN_MACRO3(item1, item2, item3) CARLA_JOIN_MACRO_HELPER3(item1, item2, item3)
+
 #ifdef DEBUG
 /** This macro lets you embed a leak-detecting object inside a class.
     To use it, simply declare a CARLA_LEAK_DETECTOR(YourClassName) inside a private section
diff --git a/source/utils/CarlaPluginUI.cpp b/source/utils/CarlaPluginUI.cpp
index 54715f17b..fcf47c84a 100644
--- a/source/utils/CarlaPluginUI.cpp
+++ b/source/utils/CarlaPluginUI.cpp
@@ -496,11 +496,14 @@ private:
 #ifdef CARLA_OS_MAC
 
 #if defined(BUILD_BRIDGE_ALTERNATIVE_ARCH)
-# define CarlaPluginWindow CARLA_JOIN_MACRO(CarlaPluginWindowBridgedArch, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindow CARLA_JOIN_MACRO3(CarlaPluginWindowBridgedArch, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindowDelegate CARLA_JOIN_MACRO3(CarlaPluginWindowDelegateBridgedArch, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
 #elif defined(BUILD_BRIDGE)
-# define CarlaPluginWindow CARLA_JOIN_MACRO(CarlaPluginWindowBridged, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindow CARLA_JOIN_MACRO3(CarlaPluginWindowBridged, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindowDelegate CARLA_JOIN_MACRO3(CarlaPluginWindowDelegateBridged, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
 #else
-# define CarlaPluginWindow CARLA_JOIN_MACRO(CarlaPluginWindow, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindow CARLA_JOIN_MACRO3(CarlaPluginWindow, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
+# define CarlaPluginWindowDelegate CARLA_JOIN_MACRO3(CarlaPluginWindowDelegate, CARLA_BACKEND_NAMESPACE, CARLA_PLUGIN_UI_CLASS_PREFIX)
 #endif
 
 @interface CarlaPluginWindow : NSWindow
@@ -552,6 +555,7 @@ private:
 - (instancetype)initWithWindowAndCallback:(CarlaPluginWindow*)window
                                  callback:(CarlaPluginUI::Callback*)callback2;
 - (BOOL)windowShouldClose:(id)sender;
+- (NSSize)windowWillResize:(NSWindow*)sender toSize:(NSSize)frameSize;
 @end
 
 @implementation CarlaPluginWindowDelegate
@@ -579,26 +583,36 @@ private:
     (void)sender;
 }
 
-@end
-
-@interface CarlaPluginView : NSView
-- (void)resizeWithOldSuperviewSize:(NSSize)oldSize;
-@end
+- (NSSize)windowWillResize:(NSWindow*)sender toSize:(NSSize)frameSize
+{
+    for (NSView* subview in [[window contentView] subviews])
+    {
+        const NSSize minSize = [subview fittingSize];
+        if (frameSize.width < minSize.width)
+            frameSize.width = minSize.width;
+        if (frameSize.height < minSize.height)
+            frameSize.height = minSize.height;
+        break;
+    }
 
-@implementation CarlaPluginView
+    return frameSize;
+}
 
-- (void)resizeWithOldSuperviewSize:(NSSize)oldSize
+/*
+- (void)windowDidResize:(NSWindow*)sender
 {
-    [super resizeWithOldSuperviewSize:oldSize];
+    carla_stdout("window did resize %p %f %f", sender, [window frame].size.width, [window frame].size.height);
 
-    /*
-    for (NSView* subview in [self subviews])
+    const NSSize size = [window frame].size;
+    NSView* const view = [window contentView];
+
+    for (NSView* subview in [view subviews])
     {
-        [subview setFrame:NSMakeRect(0, 0, oldSize.width, oldSize.height)];
+        [subview setFrameSize:size];
         break;
     }
-    */
 }
+*/
 
 @end
 
@@ -615,7 +629,7 @@ public:
         const CarlaBackend::AutoNSAutoreleasePool arp;
         [NSApplication sharedApplication];
 
-        fView = [[CarlaPluginView new]retain];
+        fView = [[NSView new]retain];
         CARLA_SAFE_ASSERT_RETURN(fView != nullptr,)
 
         uint style = NSClosableWindowMask | NSTitledWindowMask;
@@ -640,13 +654,26 @@ public:
             return;
         }
 
-        ((NSWindow*)fWindow).delegate = [[[CarlaPluginWindowDelegate alloc] 
+        ((NSWindow*)fWindow).delegate = [[[CarlaPluginWindowDelegate alloc]
             initWithWindowAndCallback:fWindow
                              callback:callback] retain];
 
-        // if (! isResizable)
+        /*
+        if (isResizable)
+        {
+            [fView setAutoresizingMask:(NSViewWidthSizable |
+                                        NSViewHeightSizable |
+                                        NSViewMinXMargin |
+                                        NSViewMaxXMargin |
+                                        NSViewMinYMargin |
+                                        NSViewMaxYMargin)];
+            [fView setAutoresizesSubviews:YES];
+        }
+        else
+        */
         {
             [fView setAutoresizingMask:NSViewNotSizable];
+            [fView setAutoresizesSubviews:NO];
             [[fWindow standardWindowButton:NSWindowZoomButton] setHidden:YES];
         }
 
@@ -702,6 +729,19 @@ public:
     void idle() override
     {
         // carla_debug("CocoaPluginUI::idle()");
+
+        for (NSView* subview in [fView subviews])
+        {
+            const NSSize viewSize = [fView frame].size;
+            const NSSize subviewSize = [subview frame].size;
+
+            if (viewSize.width != subviewSize.width || viewSize.height != subviewSize.height)
+            {
+                [fView setFrameSize:subviewSize];
+                [fWindow setContentSize:subviewSize];
+            }
+            break;
+        }
     }
 
     void focus() override
@@ -720,17 +760,21 @@ public:
         CARLA_SAFE_ASSERT_RETURN(fWindow != nullptr,);
         CARLA_SAFE_ASSERT_RETURN(fView != nullptr,);
 
-        [fView setFrame:NSMakeRect(0, 0, width, height)];
+        const NSSize size = NSMakeSize(width, height);
 
-        for (NSView* subview in [fView subviews])
+        [fView setFrameSize:size];
+        [fWindow setContentSize:size];
+
+        // this is needed for a few plugins
+        if (forceUpdate)
         {
-            [subview setFrame:NSMakeRect(0, 0, width, height)];
-            break;
+            for (NSView* subview in [fView subviews])
+            {
+                [subview setFrame:[fView frame]];
+                break;
+            }
         }
 
-        const NSSize size = NSMakeSize(width, height);
-        [fWindow setContentSize:size];
-
         /*
         if (fIsResizable)
         {