If a tree is created with a mixture of single line and multi-line items, the vertical scrollbar does not properly continuously scroll to the bottom. If the multi-line items are first, the scrollbar will over scroll. If the multi-line items come after the single line items it take many actions to scroll all the way to the actual bottom. If all items are the same number of lines, it functions correctly. The scroll wheel action functions correctly. I tried this with all control types (classic, modern, system, NXG, and silver). The attached code demonstrates the issue and does not have to be run.It is in 2019. but this may be an old issue.
Using a second scrollbar to work around this would be very painful due to the nature of a tree structure (collapsible items).
