They should be a full cube. That might be why your batch weight was a little low. Adjust it a little thicker and see what happens.
That will increase the bridge thickness and fill up the dimples some but,the bridge is already a hair over the recommended 1/16"-1/8".When I looked at the video the bridge looked awfully thin,only problem with that is I don't know how long the cubes were sitting there.Could have been a few seconds or 15 minutes.
You need to update the firmware to the latest version first. There were some problems with some units showing full bin even with the curtain closed. Then, increase the bridge thickness a little. The slab isn't supposed to completely break up when it falls in the bin. There should be a little dimple, but not much.
I have had several of these newer manitowoc units have a single cube hold the bin door open, and the display show the machine is full of ice. I agree with the bridge thickness adjustment , Also I have had some success with the front of the bin being tipped slightly lower than the rear.