This is still happening and is driving us mad. It is now happening several times per evening, exactly on the hour every time, but not every single hour. We are having to wait, rewind, and then review what we were watching. That is possibly thankfully, otherwise we would have missed the endings to a lot of programs.
It's not specific to 22.00 and not always whilst the box is recording and not always when in non live mode.
Not normal behavior. Push for an engineer visit and it'll be replaced with another V6 free of charge.