We can check it with your GUI file.

Roger, I cannot repeat it with our bus.
Is the problem occurs if you remove the relation from this item at all? Maybe it's a bed answer to initialization request (iridium makes init of all the feedbacks by the start)

Hi Roger

So the font "Segoe UI Italic" doesn't support some symbol he got from the bus.
Can you pls show the screen-shot of ETS monitor when u see the box symol in GUI?

Hi Roger!
How do you imagine it? As a file of log? as a button "create report"?