Here’s a weird and fun bug:
- Add a Combobox above a black background, just to make this obvious
- Enter list of items (try 20 items)
- Enable the Scrollbar for the Combobox
- Edit the list and delete several from the end of the list (try deleting the last 5)
- Click out of the Combobox and it has a “phantom” extension of where the scrollbar used to display.
- Disable and re-enable the Scrollbar to resolve.
Before and after: