Track pictures cannot be assigned to input/output channels in the MixConsole, but they can be assigned to these channels in the project window. However, the pictures will only be visible on the project window. The MixConsole will not show them.
Confirm, it’s the same here, on Mac.
Sounds like you guys are unlucky enough to experience some of the the endless sea of GFX related glitches that are currently haunting this forum, as it is I’m really lucky as everything works fine (bar some missing track names in the channel editor) but I feel for you as it must be really frustrating
In fact, I have no problem with this. I’m not using track pictures. I just tried it now, and confirm, it’s same here.