How to reproduce:
1. Open the attached “AnimationTest.zip“ project
2. Open the Timeline tab
3. In the Hierarchy tab, click on the “Cube” GameObject
4. Observe the texture of the Timeline grab handle. Notice that the handle looks like a low-resolution, pixelated texture
5. Open the Animation tab
6. Observe the texture of the Animation grab handle

Expected result: The grab handle looks like a low-resolution pixelated texture with blocky edges
Actual result: The grab handle looks like a low-resolution texture with blurred, smooth edges

Reproducible with: 6000.0.61f1, 6000.2.10f1, 6000.3.0b8, 6000.4.0a3
Could not test with: 2022.1.0a5 (The Animation window has a grab handle starting from 6000.0.60f1)

Reproducible on: macOS 15.3.2 (24D81) (M1 Max)
Not reproducible on: No other environments tested

Notes:

• The handle in the Timeline window looks like a low-resolution texture that’s pixel-doubled using nearest-neighbor sampling
• The handle in the Animator window looks like a low-resolution texture that’s stretched using bilinear sampling and at the bottom there’s a line that appears to be a repeat of the top of the texture (due to the filtering)