Column issues completion event multiple times

While testing the: https://h5p.org/column#example=34129

I notice the ‘Column’ library issues completion event every time you interact with ‘Drag and Drop’ — provided this is the last activity you interact with (going from top to bottom). 

If the ‘Drag and Drop’ is NOT a last activity (e.g., going from bottom to top) the issue is not present. 

Library name: Column
Library version: 1.12.0


Fix could be at h5p-column.js 

commit: ad8f0f4 
in trackScoring function definition,
LN:73: 


Change LN:73

from:


      if (event.getScore() === null) {


to: 

      if (event.getScore() === null && event.data.statement.result.completion) {


I am not 100% sure if above is the right way to fix the issue. 

The bug could be in DragQuestion library, drag-question.js, 

commit: cf02346, 
LN:178:

    draggable.on('interacted', function () {
        self.answered = true;
        self.triggerXAPIScored(self.getScore(), self.getMaxScore(), 'interacted');
    });

The LN:180 

self.triggerXAPIScored(self.getScore(), self.getMaxScore(), 'interacted');

could be changed to (just a guess):


      self.triggerXAPIScored(self.getScore(), self.getMaxScore(), 'interacted', false);



Unfortunately the DragQuestion (h5p-drag-question.js) is a distribution version and I do not know how to setup development environment for this project on my local, so I could debug and test it locally, before making pull request. 

Best regards, 
MichaelD