Version: Milestone 55, build 8872.34, chrome 55.0.2883.34

What steps will reproduce the problem?
(1) Enterprise-enroll a device into a domain (ex: crosprqa4.com) with an Org. Unit (ex: Debug > BLE-Advertise) which has these Device Settings:
   Disable Bluetooth on device: set to "Do not disable bluetooth".
   Kiosk applications contains "Krishna Test BLE freq App" (webstore id: akbaeokbhhplcacgmkkcbjghgbhchkib)  
   Auto-launch kiosk app:  "Krishna Test BLE freq App"
Note:  The device must support bluetooth 4.0, and be running chromeos of M55 or higher.

(2) After app auto-launches, create one advertisement by clicking the [Advertise] button.  Verify the ad is broadcasting at 20ms (the default) using the nRF Connect app on a phone (available from the Play Store).

(3) Enter a different value in the [Update Advertisement Interval] text box, (ex: 30) then click that button.


What is the expected result?
Registered advertisements should continue broadcasting with the new frequency.

What happens instead?
The advertisement stops.  If you register a second ad, both advertisements are played at the new frequency.  Change the frequency again, and both ads stop.


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