I have the same problem. SCT focuser is attachted via AUX to CGX. In the INDI Control Pannel I can see Celestron CGX which has a focuser tab. I can set an absolute position and her the focuser turn. However in the optical train setup the focuser drop down is empty.

Bellow the ouput from Celestron CGX logs

2022-10-29T17:15:56: [INFO] Updating location is not necessary since mount is already aligned.
2022-10-29T17:15:56: [INFO] Updating time is not necessary since mount is already aligned.
2022-10-29T17:15:56: [INFO] Device configuration applied.
2022-10-29T17:15:56: [INFO] Updating location is not necessary since mount is already aligned.
2022-10-29T17:15:56: [INFO] Dome Policy set to: Dome ignored. Mount can park or unpark regardless of dome parking state.
2022-10-29T17:15:56: [INFO] Auto search is enabled. When connecting, the driver shall attempt to communicate with all available system ports until a connection is established.
2022-10-29T17:15:56: [INFO] Loading device configuration...
2022-10-29T17:15:56: [INFO] Focus Limits: Maximum (43235) Minimum (2276) steps.
2022-10-29T17:15:56: [INFO] update focuser properties
2022-10-29T17:15:56: [INFO] Mount UTC offset: 2.00. UTC time: 2022-07-24T20:04:16. DST: Off
2022-10-29T17:15:56: [INFO] Mount supports guiding.
2022-10-29T17:15:56: [INFO] Mount is parked.
2022-10-29T17:15:56: [INFO] Mount tracking is off.
2022-10-29T17:15:56: [INFO] Mount model: CGX
2022-10-29T17:15:56: [INFO] Controller version: 5.31
2022-10-29T17:15:56: [INFO] Celestron CGX is online.

Happy to provide any other information.

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