I started seeing something similar about about 4/5 days ago. My tablo/Roku system exits out to “watch ---- delete” screen as if I had pushed the “back” button. It might take watch/resume one time or has many as a dozen times to continue watching. Then it may go “back” in less than a minute. This happens for freshly recorded program or programs that were recorded two months ago.
I have checked the back button on the remote and is not stuck. It is very annoying