Some TextMesh Pro Font Asset Preview Box items icons are tiny or nonexistent

Reproduction steps:
1. Create a new project
2. Import TMP Essential Resources (Window > TextMeshPro > Import TMP Essential Resources)
3. Open Fonts folder (Assets > TextMesh Pro > Fonts)
4. Expand LiberationSans Assets preview box
5. Observe LiberationSans Assets preview box items

Actual result: Font Material has no icon and Font Texture icon is very small
Expected result: Font Material and Font Texture has clearly visible icons

Reproducible with: 2021.3.56f1, 2022.3.67f1, 6000.0.58f1, 6000.2.6f1, 6000.3.0b3, 6000.4.0a1

Reproduced on: macOS Sequoia 15.4 (M4)