Seek bar skipping not working in Firefox

[stonie08]

OCAP Version: v0.5.0.1-beta
Server OS: Linux
Description:
When using Firefox, skipping on the seek bar by either sliding the progress indicator along the time axis or clicking on any point on the time axis doesn't do anything. The progress indicator will jump back to its original position and the video will continue to play where it left off.

Firefox 45.7.0 ESR on Debian Jessie

Expected behaviour:
Clicking on any point on time axis, or sliding the indicator along the time axis should make the playback jump to the indicated moment in the playback.

Steps to reproduce:

• Open Firefox
• go to an OPEC website
• choose any mission in the operation selection screen.
• try to skip some part of the playback by clicking on the time axis

RPT File
Web-frontend related