Are you using the new scheduling gizmo so you don't need to reboot? Apparently there is a suspicion that this has the undesirable side effect that you describe.
But you don't have to use "the new scheduling gizmo so you don't need to reboot".
Does it actually stop recording when it is supposed to even though the indications are that the recordings are continuing?
I think if you wait for every package in the custom firmware to be declared free of all bugs you will wait for all eternity. The specific software referred to in #6 is a very recent development marked as beta and has to be specifically enabled by the user.Reading through the posts related 3.10 shows it still seems to have a few bugs to be resolved including that suspicion mentioned in post #6 on this thread.