Adding the "Rendering Layer" Search Filter in the Lighting Search for the first time enters part of the filter as a text

How to reproduce:
1. Create a new Unity project
2. Go to Window -> Rendering -> Lighting Search
3. In the Search, click the "+" button -> Rendering Layers -> Any Layer apart "Default"
4. Observe the Search query

Expected results: The added Search filter is "renderinglayer | Light Layer x"
Actual results: The added Search filter is "renderinglayer | Light" and text "Layer x"

Reproducible with: 6000.5.0a9, 6000.6.0a1
Can't test with: 6000.0.71f1, 6000.3.11f1, 6000.4.0b12 (No Search integration)

Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested

Note: Changing the already existing Search filter to another layer displays the block correctly