Puzzle activity with Drag and Drop

Hello !

I would like to make a puzzle activity with the H5P Drag and Drop content.

At first glance, this seems to work with Drag and Drop content, but I get positioning pieces issues on the dropzone. 

As you can see on the attached file, I got a blanck lines between pieces on the Drop zone.

I tried many things by changing the size of the pieces, the size and position of the Drop zones, but I did not find a suitable solution.

Any suggestions or help would be highly appreciated !

And Thank you again for this wonderful interactive content system !