Steps to reproduce:
1. Create new Unity project
2. Change Editor theme to Light (Preferences > General > Editor Theme)
3. Open Package Manager window
4. Install Behaviour package (com.unity.behavior)
5. In Project window create Blackboard (Create > Behaviour > Blackboard)
6. Open Blackboard window
7. Observe the window tab and window title bar

Actual results: Blackboard tab and title says “Blackboard (Blackboard)”

Expected results: Window tab and title should only say once “Blackboard”

Reproducible with versions: 1.0.13 (6000.0.62f1, 6000.2.10f1, 6000.3.0b9, 6000.4.0a4)

Tested on (OS): Ubuntu 22.04, macOS Silicon Tahoe 26.0 (M1)