Bug in time counters of videos (Photos/Quicktime)

Hello. I have this problem since upgrading to High Sierra and I couldn't find about it anywhere online.

This happens on my early 2015 Macbook Air 13' and on my 2016 Macbook retina 12'. It's exactly the same.

It happens on Quicktime Player, when playing or recording videos, and in Photos when playing videos.

The time counter on the gray overlay shows 00('00econd':03)------26('00econd':26)

Please refer to the screenshots to understand what I mean.

Am I the only one with this problem?

Anyone know how to fix it?

Thank you.