Replay server had an issue where live replays ended early for some people. I did a blind fix that might've fixed that and which was deployed recently. Anyone who had the issue with live replays, I'd be very thankful if you tried watching live replays a few times and let me know if it works now 
Replay server feedback
@mazornoob I had a live replay end on me prematurely yesterday during casting. I hadn't caught up in time, if that is relevant to you.