JSON.stringify not working in RoomOS

[gfolens]

I have tried the example: Simple Hue light control demo on a Webex Room Kit Pro running RoomOS.
The program fails. After some debugging I found the function JSON.stringify is not converting the provided string to the correct format.
Example: the string: { on : false } parsed by JSON.stringify should normally result in: {"on":false}.
But for the RoomOS softare it remains: { on : false }.
Not sure if the latest CE versions are also impacted.