OBS Default Scene is not automatically being set
When adding a OBS scene the first fetched scene is being used as default value for the input selection. Leaving the value as-is by not touching that input there seems to be no value set for the scene, which is noticable by the streamdeck button doing nothing. After opening the input selection and changing the scene to another one the value seems to get applied correctly and it is working as intended. So if you want to add a button selecting the first scene, you'll have to first select another scene and then switch back to the first scene in order for it to be used.