diff --git a/runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java b/runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java
index 20a2f378d1..42de5fc510 100644
--- a/runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java
+++ b/runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java
@@ -488,7 +488,7 @@ public class ClientUI
 			}
 
 			// Update config
-			updateFrameConfig(true);
+			updateFrameConfig(false);
 
 			// Create hide sidebar button
 
@@ -596,6 +596,8 @@ public class ClientUI
 
 			// Show frame
 			frame.setVisible(true);
+			// On macos setResizable needs to be called after setVisible
+			frame.setResizable(!config.lockWindowSize());
 			frame.toFront();
 			requestFocus();
 			log.info("Showing frame {}", frame);