title: Safari Web Extension horribly slow
body: <p>So I created a Safari Web Extension. I did not change any piece of code and ran the template code provided by Xcode.
  I clicked on the toolbar item and a blank popover window popped up. It took around a good 5 seconds to load the &quot;Hello World!&quot; screen (It is the screen that is the part of the template Xcode provides).
  After that, whenever I again clicked on the toolbar item, the &quot;Hello World!&quot; screen popped up immediately, but Safari did not respond until around another 5 seconds.</p>
  <p>Is this a bug on Apple's part or am I missing something?
  I am using Xcode 12.2 and Safari 14.0.1</p>
  <p>Note: This does not happen on a Safari App Extension</p>