Animation name field does not truncate long names in Animation window

Unity: Mecanim Animation

6.4.X

6.3.X

6.6.X

6.5.X

This is a minor ui issue, it was fixed in 6000.6 but won't be backported to 6000.5

Steps to reproduce:

Create a new project
Select any object in the "Hierarchy" window
Go to "Window -> Animation -> Animation"
Click the "Create" button
Enter a longer animation title (for example, "NewAnimationNewAnimationNewAnimation.anim") and click "Save"
Observe Animation dropdown

Actual results: The animation name field displays the full long name without truncation, causing it to overflow or disrupt the layout

Expected results: Long animation names should be truncated within the field (e.g., with ellipsis “…”) to fit the available space

Reproducible with versions: 6000.3.13f1, 6000.4.5f1, 6000.5.0b6, 6000.6.0a4

Tested on (OS): macOS - Tahoe 26.4.1