Dahua camera DH-IPC-HFW2441S-S

We have updated the software to version 6.1.2.42921, but the secondary stream for this Dahua camera (DH-IPC-HFW2441S-S) still does not show.  As far as I could see in the release notes, this version was supposed to fix the problem with this camera.

Does anyone have a solution for this?