meanwhile i have tested some more scenarios:

Elux Linux Client 2006 and 2103 working with Agent 7.13.1

Elux Linux Client 2006 and 2103 Not working with Agent 2006, Agent 2103 or Agent 2106

Windows Clients always work.

Can not test 2106 Elux Client yet because our Client management has no image yet. But i doubt this will bring any improvement as all clients are working with Horizon 7.x Agents.

Keep in mind that we are using direct connect agent plugin if that would make any difference. i think it is the same topology as for non tunneled connection (no uag) isn't it?