Thanks for writing and for the project.
When clicking on the Button which changes the pivot index I can see a correctly loaded listbox, i.e. items are there and no obvious visual glitches are present. Are you sure the project you've prepared reproduces the scenario?
As for your license, we normally support customers who have a valid license. Even if we identify an issue right now which we eventually fix in an upcoming build, you will not be able to download it as your license has expired.
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