This has been going on for a while on multiple server/player versions. If I tune to a channel that’s got some buffer built up it will ask if I want to watch live or from the start. Even if I select live it will usually kick me to some earlier point, as much as an hour or more behind if there is enough buffer.
The second issue occurs when I get withing a minute or so of live. If I try to fast forward it just stays at the same point. Sometimes if I try multiple times in a row it will eventually move forward to live but it always takes multiple attempts.