diff --git a/packages/extension-ui/src/createView.tsx b/packages/extension-ui/src/createView.tsx
index 1851529003..98250c7b2b 100644
--- a/packages/extension-ui/src/createView.tsx
+++ b/packages/extension-ui/src/createView.tsx
@@ -10,6 +10,24 @@ import { HashRouter } from 'react-router-dom';
 import { View } from './components/index.js';
 
 export default function createView (Entry: React.ComponentType, rootId = 'root'): void {
+  const targetInnerWidth = 560;
+  const targetInnerHeight = 600;
+
+  // Popup window size is initially set via chrome.windows.create, however
+  // it will result in different inner dimensions on Windows and Mac OS.
+  // This is a hacky way to have a consistent popup size
+  if (
+    window.innerWidth !== targetInnerWidth ||
+    window.innerHeight !== targetInnerHeight
+  ) {
+    const newOuterWidth =
+      targetInnerWidth + (window.outerWidth - window.innerWidth);
+    const newOuterHeight =
+      targetInnerHeight + (window.outerHeight - window.innerHeight);
+
+    window.resizeTo(newOuterWidth, newOuterHeight);
+  }
+
   const rootElement = document.getElementById(rootId);
 
   if (!rootElement) {