Problem solved.
I discover that was a binding issue.
Hugo Ferreira <hferreira...@gmail.com> escreveu no dia domingo, 24/10/2021
à(s) 17:16:
> Hi,
>
> Jewel ComboBox doesn't perform very well with Office Add-In (it tries to
> emulate mobile and almost disappear the list on the bottom of the page).
> So, I tried Jewel DropDownList that it's not so pretty (it's a html
> DropDownList anyway) but works as expected however the values of the list
> are all set as null (in the minute I change to ComboBox, they appear again).
>
> <j:DropDownList labelField="Description"
> dataProvider="{dataProvider}"/>
>
> What am I doing wrong ?
>
> Thanks in advance,
> Hugo.
>
