Was working with oder Version!!
There is a simple workaround to this known issue. To me it happens when I let the Edge charge. By itself it goes to sleep mode when changing is completed. If you use it after that it will have the battery stuck at 100%. However wake it up, do a complete shutdown (red Power Off button on thouch screen). Once this proper shutdown is done, the battery % will work just fine after reboot. I got into the habit of, after charging, unplugging the device, waking it up, doing a shutdown. After that all is good.