OpenHAB does not detect channels of HM-LC-Sw1PBU-FM

I have installed 2 Homematic Switches of type “HM-LC-Sw1PBU-FM”.
The devices are detected by Homegear and multiple channels are reported:

(Family)> ls
         ID │ Name                      │  Address │ Serial Number │ Type │ Type String               │ Firmware │ Config Pending │ Unreach │ Low Bat
────────────┼───────────────────────────┼──────────┼───────────────┼──────┼───────────────────────────┼──────────┼────────────────┼─────────┼────────
            │                           │          │               │      │                           │          │                │         │        
          1 │ EntertainmentSwitch       │   4AA3B4 │    NEQ0400775 │ 00AC │            HM-ES-PMSw1-Pl │      2.5 │             No │      No │      No
          2 │ OfficeSmokeDetector       │   482FE6 │    NEQ0001699 │ 00AA │               HM-Sec-SD-2 │      1.0 │             No │      No │      No
          3 │ DeckeStrasseSwitch        │   458520 │    NEQ0138938 │ 0069 │           HM-LC-Sw1PBU-FM │      2.8 │             No │      No │      No
          4 │ DeckeGartenSwitch         │   45854B │    NEQ0138897 │ 0069 │           HM-LC-Sw1PBU-FM │      2.8 │             No │      No │      No
 0x40000002 │                           │   482FE6 │   *NEQ0001699 │ 00AA │          HM-Sec-SD-2-Team │        ? │             No │      No │      No
────────────┴───────────────────────────┴──────────┴───────────────┴──────┴───────────────────────────┴──────────┴────────────────┴─────────┴────────
(Family)> ps 4
Peer with id 4 and device type 0x69 selected.
For information about the peer's commands type: "help"
(Peer)> channel count
Peer has 2 channels.

Unfortunately OpenHAB does not detect any channels and thus the switch cannot be triggered.

The thing is shown in PaperUI as:

Wireless Switch Actuator 1-channel for brand switch systems, flush-mount (HM-LC-Sw1PBU-FM)

Turning on DEBUG log shows

2017-01-24 00:44:44.960 [DEBUG] [ternal.communicator.HomematicGateway] - Triggering values reload for device 'NEQ0138897'
2017-01-24 00:44:44.965 [DEBUG] [ternal.communicator.HomematicGateway] - Loading values for channel HmChannel[number=0,type=MAINTENANCE,initialized=false] of device 'NEQ0138897'
2017-01-24 00:44:44.973 [DEBUG] [ematic.handler.HomematicThingHandler] - Initializing 0 channels of thing 'homematic:HG-HM-LC-Sw1PBU-FM:69acf124:NEQ0138897' from gateway '69acf124'
2017-01-24 00:44:44.977 [DEBUG] [ternal.communicator.HomematicGateway] - Loading values for channel HmChannel[number=1,type=SWITCH,initialized=false] of device 'NEQ0138897'
2017-01-24 00:46:13.191 [DEBUG] [ternal.communicator.HomematicGateway] - Loaded device 'NEQ0138897' (HM-LC-Sw1PBU-FM) with 31 datapoints
2017-01-24 00:46:13.486 [DEBUG] [ternal.communicator.HomematicGateway] - Loading values for channel HmChannel[number=0,type=MAINTENANCE,initialized=false] of device 'NEQ0138897'
2017-01-24 00:46:13.497 [DEBUG] [ematic.handler.HomematicThingHandler] - Initializing 0 channels of thing 'homematic:HG-HM-LC-Sw1PBU-FM:69acf124:NEQ0138897' from gateway '69acf124'
2017-01-24 00:46:13.499 [DEBUG] [ternal.communicator.HomematicGateway] - Loading values for channel HmChannel[number=1,type=SWITCH,initialized=false] of device 'NEQ0138897'

This seems to be a bug. Can you create an issue in the openHAB Add-ons repository (https://github.com/openhab/openhab2-addons)?