setTimeout Invoked Multiple Times

Originator:jdsalingerjr
Number:rdar://22360634 Date Originated:20-Aug-2015 10:12 AM
Status:Open Resolved:
Product:iOS Product Version:9.0 beta
Classification:Serious Bug Reproducible:Always
 
Summary:
On iOS 9 UIWebView, any function passed into window.setTimeout will be invoked multiple times.  It does not matter how long of a delay you set for the timeout.

Steps to Reproduce:
<!DOCTYPE html>
<html>
  <head>
    <script>
      var i = 0;
      setTimeout(function() {
        i++;
        console.log('setTimeout invoked ' + i + ' times');
      }, 0);
    </script>
  </head>
  <body>
  </body>
</html>

Expected Results:
The console should only receive one log statement

Actual Results:
depending upon device, you will receive 5 / 6 (multiple) log statements

Version:
iOS 9.0 beta [13A4325c]

Notes:


Configuration:
iPad Air 15GB

Attachments:

Comments


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