Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Install the Multiplayer Play Mode package (com.unity.multiplayer.playmode)
3. Open the Project Settings window (Edit > Project Settings)
4. Open the "Playmode" tab in the Project Settings
5. Click the "+" button to create a new Player Tag
6. Enter any name
7. Press the "Enter" button on the keyboard
8. Observe the Project Settings window

Actual results: Nothing happens after pressing "Enter" button, for the tag to be created the "Enter" button has to be pressed twice

Expected results: The tag is created with one "Enter" button press

Reproducible with versions: 6000.0.66f1, 6000.3.5f1, 6000.4.0b5, 6000.5.0a5

Tested on (OS): MacOS Silicon Tahoe 26.2

Notes:

• The Editor's Tag window is a good example of how creating a new Tag just needs one "Enter" button press