Why are there no playback controls in LibreOffice Impress?

I'm a user of Impress, and I have a bunch of friends that have settled on it for their presentations, too.

We are generally happy, but for the video side. When you insert a video in your presentation, there is no way to pause and rewind, look for a point of the video. It is a known issue, open for 10 years, and we were wondering if there is a fundamental reason or obstacle for this feature.