Wyse 5070 ThinOS 2205 with Citrix VAD 2203 - wrong MTU with EDT

Hello,

our Thinclients use the wrong MTU Size (1024) when connecting to a VDA 2203 Windows 10 via EDT.
EDT MTU Autodiscovery is in use and worked fine with VDA 2012, Thinclients always connected with MTU 1500.
But since the VDA Update to 2203 they use wrong MTU Size.
All other Clients (Windows, MAC..) connect fine with the correct MTU of 1500.
We even tried to setup an additional Storefront Server just to test for manual MTU Configuration inside default.ica File.
(see: https://support.citrix.com/article/CTX231821)
But the Thinclients ignore the settings in default.ica File.
Can anyone confirm that this is an issue with the 5070 Series?
Or does someone know how to configure EDT MTU Size with module.ini or All_Regions.ini in the VDI Configuration Editor in WMS?
I found zero Documentation on what needs to go inside those Files for the Thinclients to use the fixed MTU Size from default.ica on Storefront.
CWA Version: 22.3
ThinOS: 2205
LAN only (no Gateway ADC)

Many Thanks