Player progress bar and video progress bar always reset to beginning when scrubbing

I am experiencing problems with the Articulate Storyline 360 Player (modern and classic) and the video player progress bar when using scorm courses in our LMS (SAP LSO).

The courses work fine outside the LMS (SAP LSO) on a simple web server and in a different LMS as well.

Bug description:

When I start a page in the course with audio and I scrub the progress bar, the player will restart the audio from the beginning - not caring about the position I scrubbed to.

When I play a natively embedded video in the course (no web object) the video player will show the same behaviour. The video will restart at the beginning when I scrub to any different position on the video progress bar.

 

Does anybody of you have an idea how to solve this problem? Thank you :-)