UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

Steps to reproduce the problem:
1. Call a Web service returning a JSON with a field containing a long value : 3412318551606316990
2. Display the result as "RAW"
{...,"sessionId":3412318551606316996,...}

3. Display the value as "Parsed"
{...,"sessionId":3412318551606317000,...}

4. The result is the same when used in JavaScript

What is the expected behavior?
Value must not be rounded to 3412318551606317000 and must be equals to 3412318551606316996

What went wrong?
The value is rounded and no longer corresponds to the expected value.
As in my use case value is a toklen identifier, my session could not be authenticated.

Did this work before? N/A 

Chrome version: 71.0.3578.98  Channel: stable
OS Version: 10.0
Flash Version: 

Don't know if it was working before as I was using smaller values like 3412318551606316.