The splash screen of "Loading" effect doesn't work on IOS safari browser

[Lishuo Lin]

Thank you, all the great programmers. 

I found one problem when I create a loading page with exactly the same code in  $:/SplashScreen  in Creating a splash screen. I can see the loading animation when I open https://tiddlywiki.com/ on Safari on my iphone, just the same on PC. But it doens't work (blank page when loading) for my own tiddlywiki website. However, the loading animation works well too when I use Chorme on PC or Laptop to open my tiddlywiki website.

I couldn't find where goes wrong and hope someone can share some ideas. Thanks!