HTTP3 - Ads not showing up with <ins> using Asyncjs.php code? | Revive v4.1.4

[Fritex]

CLIENT INFORMATION:
OS: Windows 8.1 Pro
Web browser: FireFox Developer 73.0b1 - 64bit - hr-hr (Croatian)

WEBSITE INFORMATION:
Domain: www.racunalo.com
Revive Adserver (OpenX) v4.1.4 - openx.racunalo.com
- CSP policy, HSTS, X-headers ...

STATUS:
Installed and running on a sub-domain openx.example.com and serving ads on example.com.

Nginx version: 1.17.7
PHP version: 7.2.26-1+020191218.33+debian9~1.gbpb5a34b
MySQL version: 5.7.28 - MySQL Community Server (GPL)

CloudFlare
- using HTTP/2 and HTTP/3 with QUIC and 0-RTT is "enabled" on the CloudFlare dashboard
- CDN and features like rocketloader.js are enabled
- HTTPS enabled
- TLS enabled

Problem description / Issue / Reproduce the problem:
When wanting to try out HTTP3, went to "about:config" and changed settings "network.http.http3.enabled" to "true".
Restart the Web browser.
Visiting the page with Revive Adserver/OpenX, I got "white boxes" where ads should be loaded, but instead they where not showing up.

I went to look up in the browser console, and there were errors:
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data (1:1282)

PICTURE ABOUT THE ERROR IN THE BROWSER CONSOLE:

https://ibb.co/DwWsdfc

The code for showing the ads
For each zone:
<ins data-revive-zoneid="ZONE_ID" data-revive-id="UNIQUE_ID"></ins>

Written once in the footer, before closing </body> tag:
<script async="async" src="//openx.example.com/www/delivery/asyncjs.php" type="text/javascript"></script>

WORKING EXAMPLE - ajs.php
The JavaScript code for showing up ads with ajs.php - is working on the same settings with HTTP3 enabled in Web browser:
example - https://openx.example.com/www/delivery/ajs.php - isworking

To sumarize and conclude all, Async display of the ads on HTTP3 is not working, while standard JavaScript code works.

Any ideas?

Thank you!

[Ian]

try without rocketloader

[Fritex]

Will take in action ASAP!

Moreover, regarding the ticket on Github about v5.0.2 (https://github.com/revive-adserver/revive-adserver/issues/1144), are there any enhancements regarding the stated "HTTP/3+Quic" support added to Revive Adserver v5.0.2?
Where can I find and read more about them?

Has anyone tried it yet?

Thanks

Edited January 7, 2020 by Fritex
Has anyone tried it yet?