diff --git a/source/gui/mostlyharmless_WebviewBase.cpp b/source/gui/mostlyharmless_WebviewBase.cpp
index ba62821..cdcc15f 100644
--- a/source/gui/mostlyharmless_WebviewBase.cpp
+++ b/source/gui/mostlyharmless_WebviewBase.cpp
@@ -187,7 +187,6 @@ namespace mostly_harmless::gui {
         void create() {
             m_clientView = helpers::macos::createView(m_initialWidth, m_initialHeight);
             m_webview = std::make_unique<choc::ui::WebView>(m_options);
-            helpers::macos::setViewSize(m_clientView, m_initialWidth, m_initialHeight);
         }
 
         void destroy() {
@@ -198,9 +197,8 @@ namespace mostly_harmless::gui {
             helpers::macos::getViewSize(m_clientView, width, height);
         }
 
-        void setSize(std::uint32_t width, std::uint32_t height) {
-            helpers::macos::setViewSize(m_clientView, width, height);
-            helpers::macos::setViewSize(m_webview->getViewHandle(), width, height);
+        void setSize(std::uint32_t /*width*/, std::uint32_t /*height*/) {
+            // Because we're using autolayout and autoresizemask on macOS, this is handled already via the config in setParent
         }
 
         void setParent(void* parentHandle) {
diff --git a/source/gui/platform/mostlyharmless_GuiHelpersMacOS.mm b/source/gui/platform/mostlyharmless_GuiHelpersMacOS.mm
index 7083374..b2d85ac 100644
--- a/source/gui/platform/mostlyharmless_GuiHelpersMacOS.mm
+++ b/source/gui/platform/mostlyharmless_GuiHelpersMacOS.mm
@@ -33,7 +33,6 @@ void getViewSize(void* viewHandle, std::uint32_t* width, std::uint32_t* height)
     }
 
     void reparentView(void* hostViewHandle, void* clientViewHandle, void* childViewHandle, Colour backgroundColour) {
-        createView(0, 0);
         auto* host = static_cast<NSView*>(hostViewHandle);
         auto* client = static_cast<NSView*>(clientViewHandle);
         auto* child = static_cast<NSView*>(childViewHandle);
@@ -45,6 +44,15 @@ void reparentView(void* hostViewHandle, void* clientViewHandle, void* childViewH
         CGFloat f32B = static_cast<CGFloat>(b) / 255.0f;
         auto* color = [NSColor colorWithCalibratedRed:f32R green:f32G blue:f32B alpha:1];
         [[client layer] setBackgroundColor:color.CGColor];
+        host.autoresizesSubviews = YES;
+        host.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
+        host.translatesAutoresizingMaskIntoConstraints = true;
+        client.autoresizesSubviews = YES;
+        client.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
+        client.translatesAutoresizingMaskIntoConstraints = true;
+        child.autoresizesSubviews = YES;
+        child.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable;
+        child.translatesAutoresizingMaskIntoConstraints = true;
         client.frame = host.bounds;
         child.frame = host.bounds;
         [client addSubview:child];
diff --git a/source/mostlyharmless_PluginBase.cpp b/source/mostlyharmless_PluginBase.cpp
index a47bccc..eb2fa98 100644
--- a/source/mostlyharmless_PluginBase.cpp
+++ b/source/mostlyharmless_PluginBase.cpp
@@ -25,7 +25,13 @@ namespace mostly_harmless::internal {
                 _host.paramsRescan(CLAP_PARAM_RESCAN_VALUES);
             },
             .requestGuiResize = [this](std::uint32_t width, std::uint32_t height) -> bool {
-                return _host.guiRequestResize(width, height);
+                if (!_host.guiRequestResize(width, height)) {
+                    return false;
+                }
+                if (!guiAdjustSize(&width, &height)) {
+                    return false;
+                }
+                return guiSetSize(width, height);
             }
         };
         m_state = m_pluginEntry->createState(std::move(context));
@@ -433,7 +439,6 @@ namespace mostly_harmless::internal {
     bool PluginBase::guiAdjustSize(std::uint32_t* width, std::uint32_t* height) noexcept {
         MH_LOG("GUI: guiAdjustSize()");
         if (!m_editor) return false;
-        if (!m_editor->allowResize()) return false;
         m_editor->onResizeRequested(width, height);
         return true;
     }