Hello Alessandro:
You'll be pleased to learn that we've addressed your issue and will be including the fix in our upcoming releases 4.3.6 and 4.1-ESV-R15 due out July 31, 2017. We solved it differently then you suggested as the problem is deeper than the value being sent to the client getting truncated.
It is our custom to thank our contributors by citing them in the release notes. If you would like to be recognized in this fashion please respond with how you wish to be identified. Most often it is by name and organization.
Thank you for taking the time to report the issue to us.
Sincerely,
Thomas Markwalder
ISC Software Engineering