jqxListbox applying title to wrong item when autoheight is set to false

[Svetoslavb04]

Describe the bug When you apply a title to an item to enable a tooltip and the autoheight is set to false it initially sets the title to the correct item. Then after scrolling a title is being applied to wrong items

To Reproduce Steps to reproduce the behaviour:

1. Go to 'https://jsfiddle.net/8x3r2aed/
2. Hover on the purple item to see a tooltip (only the items with purple background should have tooltip)
3. Scroll down
4. Hover on any item
5. See an error

Expected behaviour is to have tooltip only on items with purple background