There have been a few changes to the various versions of the Docker in the last few days and I have flitted between the different branches as well so my experience may not be of much use but I had the same issue. I ended up deleting the docker, reinstalling it and then my cameras were manageable again, I did have to readopt them but it saved me getting my ladders out.
I tried factory resetting one of them first but it didn't solve my issue, it also happened with a camera I had just taken out of the box. The delete and reinstall worked fine though. Any time I did not delete the whole docker and it's disk the issue just continued.