Empty Additional Header Label Doesn't Refresh

Hi all,

I have an issue I can't figure out. Here is what happens.

I have an Additional Header Label that is visible and bound to a custom BO field. When the QA loads it displays the header label value same as expected. Then after, the process changes the value of the bound custom field, and thus, changes the header label value. Well ... only if the value is not empty or made of spaces. For instance, the initial value is "07:20" and it might change to "07:40" (and this is displayed correctly) or to "" and then it still displays the first value.

It is like the empty value doesn't trigger the "refresh" method of the binding.

Of course, if I close and save, when the QA opens again it is correct (the header label is empty)

Any idea?

Thanks for your help

Chris