Hello I have been having a similar issue with the viki app on 2 different roku streaming sticks...
The episode would end and go the Roku home screen. The problem was noticed around a week ago.
I have logged out and logged back in. Verified internet connection, and the issue repeated on both Roku sticks. Then reboot one and issue still continued.
Is there a ETA on when an update will be rolled out to resolve this issue?