Steps to reproduce:
1. Create a new project using the Universal 3D template
2. Install Services Multiplayer package via Package Manager window
3. In Project window go to Assets > Create > Services > Multiplayer > create Multiplayer Session
4. In Project window go to Assets > Create > Services > Multiplayer > Session Connector > create Create Session
5. Select the Session Connector, assign the Multiplayer Session, expand Network Options and set Network to Relay
6. Change Protocol from DTLS to WSS
7. With the Inspector focused, press Cmd+Z (Ctrl+Z)
Actual results: the dropdown still reads WSS in Inspector window
Expected results: the dropdown returns to DTLS along with the serialized value in Inspector window
Reproducible with versions: 2.3.1 (6000.0.81f1, 6000.3.24f1, 6000.5.11f1, 6000.6.1f1, 6000.7.0a6)
Tested on (OS): macOS 26 (Apple silicon)