[IE11 + JAWS] Performance on html input of type range is bad

[jessegreenberg]

Found in https://github.com/phetsims/john-travoltage/issues/242 by @phet-steele. His write up is great, so I am moving the documentation here: Use this as an example case with the below steps: https://jsfiddle.net/1j1y3s8p/

First problem:

• Start with the slider at -7

  • Pay attention to the speed of the slider during this step. Hold the right arrow key down until halfway, then release. When holding, you will see the slider tick along relatively slowly.
  • After release, the slider will rapidly move right.

• Second problem:

  • Make sure you are now at the max of the slider (also this works at min), hold the right arrow key down for a short time (or left key if you are at min, try 3 seconds). Too long and you may crash JAWS.
  • After releasing from hold, press the left arrow key once. There will be a decent delay until the slider actually decrements to -6.

[jessegreenberg]

This is a problem with all HTML sliders (<input type="range">) for JAWS + IE11, and we should send a ticket to VFO.