That is exactly what I experienced!
After the first reboot I was connected but experienced some problems (zombie processes). I decided not to investigate them and just rebooted. After the reboot I had no connection (wired or wireless), however after some time searching for unbrick instructions it just came up by itself (first wireless, then wired).
I can notice that many processes are freezing (blocked) for significant amount of time (measured in minutes) on some disk operations. At the same time the btrfs-transaction process consumes 50% CPU (which is 100% of one core).