I have lookup enabled, have about 10000 items in the listbox. I select an item, so the listbox has focus, type a letter and it jumps to the item. After that, lookup does not do anything anymore, even I clear and repopulate the listbox, it does not jump anymore to the item. Also incremental does not work.
KeyDown event is not fired also, maybe thats the reason why it react only once to a keypress.
Makes no difference for me. It only works for a single keypress, then no more.
We are not able to reproduce this here, the listbox is functioning as expected. We are currently building a new version that will be released next week. You can await the next version, or alternatively use the TTMSFNCTreeView, that is actually the same component as the TTMSFNCListBox with some modifications.
I did another test, NEW fmx app, dropped the listbox, did not modify anything, assigned an onKeyDown handler, and nothing, never triggered. There is definitely something not right, because other listboxes all trigger the onkeydown event just fine.