Can't get focus to Calc listbox?

I’ve created a listbox with 4 items in it. I can see its attributes with this Macro code:
oForm = oGraphsSheet.getDrawPage().getForms().getByIndex(0)
oListBox = oForm.getByName(“CountySelection”)
msgbox “Name=”+oListBox.Name+" ItemCount="+oListBox.ItemCount+" CurrentValue="+oListBox.CurrentValue

However, any time I try using it, I click on the listbox and nothing happens. It won’t gain focus. I click on the drop down arrow but nothing happens.

Any ideas what’s wrong?

Could be your window managers fault.
Please provide further information. (OS and LO Version etc.)

Windows 10 Home, Version 1909
It’s actually the UltraOffice implementation of LibreOffice. UO version 1.0.10.0

first time i heard of “UltraOffice” could you give a link to the vender/download site?

It’s available from the Microsoft Store. Appears to be published by CompuClever Systems Inc.
Try: Ultra Office
They say: “This software uses code of LibreOffice licensed under the MPL v2.0”

You could try installing the “real” libreoffice from Download LibreOffice | LibreOffice - Free Office Suite - Based on OpenOffice - Compatible with Microsoft
and see if that solves your problem. I am not fimiliar with the listbox mechanisem yet, so i cant help you directly. But “UltraOffice” sound shady.