When viewing a list, selecting an entry in the list won't highlight it. This makes it really hard to see which entry you have selected when faced with a list view where you can add/remove entries. I've seen this in a few different places:

- Reorderable lists e.g. Custom Sorting Layers, Animation Layers, Graphics API lists
- The list view used in the Sprite Editor Secondary Texture section

Looks like a regression in 2019.3.0a10

1. Open Unity
2. Create a new project with any settings
3. Go to Layers > Edit Layers
4. Add a few entries to the Sorting Layers list
5. Select any entry in the Sorting Layers list

Expected Result:
When selected, the list entry is highlighted.

Actual Result:
When selected, the list entry is not highlighted.

Tested on Windows.

Occurs on 2019.3.0a10, 2019.3.0a11

Does not occur on 2019.3.0a9