- The engine tracks the request out per item: A, then B, then back to A sent a second request
for A beside the one still out.
- A hardware transcode superseded during its fallback answered with the NEWER session; the losing
request's player then stopped it as stale. It now answers with its own (dead) session.
- A replaced hls.js instance's late manifest no longer marks the player ready or plays the
outgoing media.
- A pause given after the answer stands: the manifest and the first canplay read the live intent.
- The debounced A/V-offset restart is dropped on an item change instead of restarting the
previous item under the next one's title.