Level Sequence Player is impossible to stop

I created a test sequence, with a single camera and a cut track. The sequence is 4 seconds long. If i start playing it an wait 4 seconds, everything is ok, i then see through the perspective of the player again.
However, if I use the Stop function call (yes I target the exact same player), that does nothing! It doesn’t stop the sequence. Even more, if i call the IsPlaying function, it returns false, while I’m clearly stuck in the sequence.

I even created a new project to test for this, and yes, the issue persists. I’m running 4.12.3

I’m having the exact same problem.

Is anybody have any solution ? Please please, I need to finish this project by the end of this month.

Thanks in advance.