“Generate For All Visible” button shrinks when mouse is hovered on in Sprite Editor window

Steps to reproduce:
1. Create new Unity project using Universal 2D Template
2. Import “Grey_Sprite_original.png” to the project
3. Select “Grey_Sprite_original.png” Asset in Project window
4. Open Sprite Editor (press Open Sprite Editor from Inspector)
5. Change to Skinning Editor mode
6. Select Geometry tool
7. At the bottom right corner press or move mouse on “Generate For All Visible” button
8. Observe the button

Actual results: “Generate For All Visible” button shrinks, changes its size when mouse is hovered on it

Expected results: “Generate For All Visible” button shouldn’t change it’s shape when clicked on or mouse is hovered on

Reproducible with versions: 6000.3.0a5 (36d7e9fd6645)

Not reproducible with versions: 6000.2.1f1, 6000.3.0a4 (53ab01ef978b)

Tested on (OS): macOS Silicon, Sequoia 15.6 (M1)