We are aware of an issue with the OBS Studio plugin where actions appear with a question mark after updating to Stream Deck 6.1. A temporary workaround is available.
Our teams are working on resolving this issue as soon as possible. We apologize for any inconvenience and thank you for your patience.
1. Open the Stream Deck application
2. Find the OBS Studio plugin on the right side in the action list
3. Right-click on an OBS action in the action list and select uninstall
4. Open the Stream Deck store and search for the OBS Studio plugin or open this link: https://apps.elgato.com/plugins/com.elgato.obsstudio
5. Install the OBS Studio plugin.