How to reproduce:
1. Create a new Unity project and install the Visual Effects package
2. In the Project window, right-click -> Create -> Visual Effects -> Visual Effect Graph -> Any VFX Graph
3. Navigate to any System Block title and enter a long string
4. Place a cursor anywhere in the text and use the arrow buttons to move the cursor
5. Observe the results

Expected results: The cursor is visible everywhere
Actual results: The cursor sometimes is not visible

Reproducible with: 6000.0.66f2, 6000.3.7f1, 6000.4.0b7, 6000.5.0a6

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Note: The issue seems to be related to zoom, because zooming in shown the cursor