DVR is recording the same show that is showing different episodes as one LONG episode. For example on May 31 Channels recorded a 180 min episode of Abandoned although it 4 separate episodes. This is happen numerous times. One day it recorded The Golden Girls for 7 hours as ONE file/episode. Surely, it's not suppose to do that.
I have noticed the same thing happen on more than one occasion too.
I've had that happen also.
The guide data was incorrect and showed 2 or 3 back to back episodes as one long episode resulting in 2-3 hour recordings.
OTA or Cable? Is the guide data generally correct for that channel?
Look in your DVR log around the time of the recording
where x.x.x.x is the IP address of your DVR computer.
Example log of a normal recording
1:02:30 recording of Alone S06E01 from 22:03:00 to 23:05:30
2019/06/06 22:00:00 [DVR] Waiting 2m59.985947049s until next job 1559883780-84 Alone
2019/06/06 22:03:00 [DVR] Starting job 1559883780-84 Alone on ch=
2019/06/06 22:03:00 [DVR] Recording for job 1559883780-84 from 1323AADB ch758 into "TV/Alone/Alone S06E01 2019-06-06 Icebreaker 2019-06-06-2203.mpg" for 1h2m29.986316091s
2019/06/06 23:05:30 [TNR] Closed connection to 1323AADB for ch758 HSTRYHP
2019/06/06 23:05:30 [DVR] Finished job 1559883780-84 Alone
2019/06/06 23:27:12 [DVR] Processing file-1371: TV/Alone/Alone S06E01 2019-06-06 Icebreaker 2019-06-06-2203.mpg
2019/06/06 23:27:13 [DVR] Running commercial detection on file 1371 (TV/Alone/Alone S06E01 2019-06-06 Icebreaker 2019-06-06-2203.mpg)
2019/06/06 23:41:13 [DVR] Commercial detection finished with 10 markers.