How to reproduce:
1. Create a new Unity project and install the VFX Graph package
2. Create any VFX Graph and open it
3. In the blackboard, press the "Space" key -> enter the "Sample" in the search and observe the results
4. Enter the "Sample c" in the search and observe the results

Expected results: Both times the results are matching the string
Actual results: The second time, there are different options with the "Sample" in the name that were not shown previously

Reproducible with: 6000.0.60f1, 6000.2.8f1, 6000.3.0b7, 6000.4.0a3

Reproducible on: macOS Sequoia 15.6 (M1)
Not reproducible on: No other environment tested

🎁Bonus Side Issue: Inconsistency in capitalisation
1. Create a new Unity project and install the VFX Graph package
2. Create any VFX Graph and open it
3. Under the "Initialize Particles" block, "Space" key -> search for "Velocity"
4. Observe the results under the "Velocity From Direction & Speed" category

Expected results: All operators such as "Multiply" or "Add" are highlighted and words have spaces between them
Actual results: Some words are missing spaces between them and all operators are highlighted

Reproducible with: 6000.0.60f1, 6000.2.8f1, 6000.3.0b7, 6000.4.0a3

Reproducible on: macOS Sequoia 15.6 (M1)
Not reproducible on: No other environment tested