I have a multiselect listbox in a panel which is made visible when a
selection is to be made. When the box comes up with a vertical scrollbar, the
scrollbar is inoperative. Page up and down keys still work, but the scrollbar
is unresponsive, even if I make selections. However, if I shift to another
browser window and then come back, the scrollbar operates just fine. I tried
setting focus, but that didn't seem to help.

Can anyone help?

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