Testing aria-expanded and aria-controls

So far, have not found a difference made by aria-controls.

With both aria-expanded and aria-controls

• Section One
  • Tests
  • Resources

With just aria-expanded

• Section One
  • Tests
  • Resources

Works

• NVDA 2014.3 with IE 11.0.9600.17280
• NVDA 2014.3 with FF 34.0.5
• JAWS 15.0.12085 with IE 11.0.9600.17280
• JAWS 15.0.12085 with FF 34.0.5
• VoiceOver OS X 10.9.5 Safari 7.0.6

Doesn't Work

• NVDA 2014.3 with Chrome 39.0.2171.95 (not a usual test config)
• JAWS 15.0.12085 with Chrome 39.0.2171.95 (not a usual test config)
• Android 4.4.2 with Chrome 39.0.2171.59
• VoiceOver OS X 10.9.5 FF 33.0.3