Reproduction steps:
1. Create a new project
2. Create any GameObject (e.g. GameObject > 3D Object > Cube)
3. Window > Animation > Animation
4. Click “Create” button in Animation window to create new Animation Asset
5. Move playhead around and observe frame tooltips

Actual result: Some frame tooltips display unnecessary decimal value (e.g. “8.00”)
Expected result: All frame tooltips are displayed consistently without any decimal values (e.g. “8”)

Reproducible with: 6000.6.0a2
Not reproducible with: 6000.5.0b2, 6000.6.0a1
Couldn’t reproduce with: 6000.0.72f1, 6000.3.12f1, 6000.4.1f1 (No tooltips on frames)

Reproduced on: macOS Tahoe 26.3 (M4), Windows 11