Steps to Reproduce:
i) Navigate till "Edit Source" link and hit enter.
ii) navigate till "Advanced", "Special Characters" or "Advanced -> Heading" control
iii) Open narrator and check if narrator is announcing expand or collapse for "Advanced", "Special Characters" or "Advanced ->Heading" button.

Actual Results:
Narrator not announcing expand or collapse state for Advanced and Special Character control.

Expected Results:
Narrator should announce state for Advanced and Special Character control.