Transition from dynamyc to static cut off some content at the end

[MHrezdovic]

Environment

• The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream
• The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

• Link to playable MPD file: I'm not able to provide our stream as they are signed...but any stream that can do a transition can do
• Dash.js version: 4.7.4
• Browser name/version: Chrome 129.0.6668.100
• OS name/version: Mac

Steps to reproduce

1. Please provide clear steps to reproduce your problem

load a dynamic stream that will transition to static after a while
observe the duration player is indicating

2. If the bug is intermittent, give a rough frequency if possible
   It happens always.

Observed behavior

Our problem occurs when transitioning from dynamic to static playback. Recently, we’ve noticed that when playing an asset that starts as dynamic and then switches to static, the playback duration calculation becomes incorrect.

Our use case is as follows:
We run a dynamic stream that ends after a certain time. When we load this stream, and the stream transitions to static, the duration calculation stops at the moment of the switch and ignores the last manifest update, which includes the transition to static with the final few segments. I managed to simulate this in the reference player and have attached screenshots.

Console output

reference.dashif.org-1728645442138.log

Expected behavior

Expectation is that player will update the stream duration after last tansitioning manifest update and play the entire asset to the real end time.