If you load a playlist from file explorer, it will play twice the track you selected first and then will jump to the third track.

If you use standard track progression :

I select (play) track 1, it will play it twice (but show the track 2 as the playing one), and then it will play the track 3

Same thing for random track progression but it follow Amarok's random list items order.

Reproducible: Always

Steps to Reproduce:
1. Load a playlist from file explorer (in Amarok)
2. Select a track (play it)
Actual Results:  
Second track is jumped

Expected Results:  
Second track is played