If I'm recording and watching a show which reaches the live position and I switch to playing another show and later come back my tivo won't resume play from the last postion, only from the beginning.
I found I can repeat this at will. Here's the sequence.
Play a show that is still recording, skip ahead to the live position or within some point close to live (had it fail from as far as 5-6 minutes behind). Let it keep playing from that point or hit pause.
Then hit the tivo button twice to get to myshows, select some other show, start playing it, after a few seconds, hit tivo twice, select the first show again, and only play is an option. I just repeated this 4 times.
I'm still looking for some sequence to break out of this, but the only time it worked correctly I had to skip back about 15 minutes from the live position to get it to resume properly (skipped back to the last tickmark).
I don't know if this fails on all types of shows or setups. In my case it was a football game that was set to record 1 1/2 hours extra and was about 2-3 hours into the game.
This occurs on my 4 tuner roamio.
(after running kmttg to see what it thought of this show, I clicked on the show, and it reported 4 times on the status of the show - after refreshing, it didn't do this and then the problem stopped on my tivo as well. So, now it's no longer repeatable on this show. All I can think of is I had resumed several times on this show before I noticed the problem the first time)