DVR Doesn't "stop recording"

There is a thread about this in the Nvidia Shield forum with several individuals having the same problem. The thread was started in June 2017 and there doesn’t appear to be any answers, so I thought that I would post the problem here as well.

Sometimes Plex gets “stuck” at the end of a recording. The recording dot in circle doesn’t turn into the triangle in circle. When you click on the show, it shows the manage recording page with recording percentage that continues to grow. See the following screen shots for clarification:

Does anyone have an idea of what is going on? Can I post any additional information?

Plex Version 1.12.1.4885
HDHomeRun Prime
Mac Mini saving to a external Thunderbolt 2 drive