Same issue for me - running Version 1.13.9.5439 on Ubuntu 16.04.
AppleTV and multiple CoreElec Kodi devices failing to access / play a recorded DVR folder. All of which were recorded in the last week (since upgrading from 1.13.8.5395)
iPad on iOS 12.1 (Plex Client version 5.5.1) also presents the same symptoms.
I had another folder also containing DVR recordings (not updated in the last week) - it works on all devices no problem.
PC client works a treat after the upgrade on all folder.
I’ll downgrade to 1.13.8.5395 and will let you know how it goes.
Cheers,
