Steps to reproduce:

1. Open or create any Project
2. In the Project Browser create an Animator Controller and an Animation Clip Asset
3. In any Scene's Hierarchy add an Animator Component to any GameObject and assign the Animator Controller
4. Open the Animator Controller Asset and drag the created Animation Clip to it's workspace
5. Double click the created Animation Clip in the Project Browser and select the Game Object that has the Animator Component attached
6. In the Animation Window click the dropdown menu in the left top corner and select "Create New Clip"
7. Rename the Clip and create it
8. Open the dropdown menu again and observe the created Clip's entry
9. Open the dropdown menu again and observe the created Clip's entry

Actual results: The dropdown's entry has no checkmark when the dropdown menu is opened right after creating a Clip

Expected results: The dropdown's entry has a checkmark when the dropdown menu is opened right after creating a Clip

Reproducible with versions: 6000.5.0a7, 6000.5.0a9, 6000.6.0a1

Not reproducible with versions: 6000.0.71f1, 6000.3.12f1, 6000.4.1f1, 6000.5.0a6

Tested on (OS): Windows 11