f5 r5600 appliance issue with adding trunk to vlan

Similar issue here as well.
We have a r5600 with F5OS 1.8 and tenants running on 17.5.0.
We created a LAG with interfaces 3.0 & 7.0 and 4.0 & 8.0 (to share the internal pipelines). And we created also some VLANs and assigned them to the LAGs as required.
Now within the tenants we see the VLANs and also the trunks. But the VLANs do NOT show any reference in the "Tagged Interface" column:

And also for the trunks the "Capacity" column shows 0:

Is this really normal behavior or do I miss something on F5OS-level?

If I try then to assign the VLAN to the trunk within the tenant configuration I also get the same error message.
Then I tried if ping is maybe working without any further configurations within the tenant, but this is also not working.
Therefor something seems to be still wrong or missing.
Configuration of F5OS looks like this:

Are there any other/additional information available, how VLAN and Trunk/LAG configuration is working and shared between F5OS and tenants?
Thank you!

Regards Stefan :)