How to reproduce:
1. Create a new 3D project
2. Open Window → Package Manager → Unity Registry and install the “Timeline” Package
3. In the “Assets” folder, create a Timeline asset
4. Double-click the Timeline asset to open it
5. Click the “+” button and select “Animation Track”
6. Right-click on the created “Animation Track” and select “Add From Animation Clip“
7. In the search field, try typing using various keyboard keys
8. Observe the input behavior

Expected result: All keyboard inputs are accepted and appear in the search field
Actual result: Some keys (commonly “m”, “l“, “c“) do not register and cannot be entered into the search field in the “Select Animation Clip“ window

Reproducible with: 1.3.0 (2022.1.19f1, 2022.3.68f1, 6000.0.60f1, 6000.2.8f1, 6000.3.0b7, 6000.4.0a3), 1.8.9 (2022.1.19f1, 2022.3.68f1, 6000.0.60f1, 6000.2.8f1, 6000.3.0b7, 6000.4.0a3)

Reproducible on: Ubuntu 22.04
Not reproducible on: Windows 11

Notes:
- After the failed inputs in “Select Animation Clip”, the issue also translates to other search fields (e.g., Project Preference search field)