HomeKit Switchable Dimmer not added

I’m trying the HomeKit integration. The documentation says that Dimmer items are supported for the Switchable tag, but if I add the tag to a Dimmer item it isn’t added as an accesory to HomeKit.
If I add the Lighting tag it works correctly.
Am I doing anything wrong or is there an error?

I’m having the exact same issue, did you ever figure this out?

No, I didn’t.

After researching a little in the code I’ve opened an issue:

Can confirm.