Timed events not working on Oculus Quest 2 app

Hi there, we have several training that uses Timed Events (red flags on the video timeline) to trigger (show) graphics. These have worked fine in both web and via Oculus Go apps. But the Timed Events does not work on the Oculus Quest 2 app, so the graphics are not shown at all when the Timed Event is supposed to happen.

Is this a known bug, and if so when will this be fixed, and is there a workaround?

Thanks in advance.