Narrator is reading the change notification twice after activating zoom controls in graphing calculator.

[MicrosoftIssueBot]

Repro Steps:

1. Launch 'Calculator' and turn on narrator.
2. Home screen will be displayed.​
3. Navigate Open navigation button and activate it.
4. Navigate to graphing calculator list item and activate it.
5. Navigate to zoom controls and activate it.
6. Observe the issue.

Actual Result: Narrator is reading the change notification twice after activating zoom controls in graphing calculator.

Expected Result: Narrator should read the change notification once after activating zoom controls in graphing calculator.

[MicrosoftIssueBot]

This is your friendly Microsoft Issue Bot. I created this issue automatically as requested by a team member.