Plex won't fast forward or rewind without restarting movie on Roku

Still a problem for me on my Roku Stick. Started in June and hasn’t worked since. I was using Plex app version 6.6 build 4 when I first noticed it. Now I am on version 6.6 build 12 and still having an issue.
Only happens with DVR shows. Works just fine on everything else. Makes me wonder if it has something to do with the encoding or container that plex uses when recording.

I just made a similar post before seeing this post.