@messayisto Sorry for reactivating this old thread.
Now on focal with the same device, on devel. Battery consumption is very high again and "top" finds out its the ominous bluebinder process again. So I tried to kill it, but it failed. Next thing I have tried is to change channel, I am now on RC - and voila, this works. Bluebinder is not running anymore, battery drain is normal again. Just in case someone on devel is wondering about the high energy consumption of the device...