Dexp Masonry Grid 2nd item is twice height

Hi, I am using the Dexp Masonry Grid module, and mostly works just great. However, there is one major bug that is preventing me from using it. The height of the second item in the grid is calculated twice as high as it needs to be. So, in a grid that is 3 columns in desktop, in the second row, there is an empty space where the second item in that row should be because the item above it is twice as high as it should be. For instance, in the illustration below, the "0" is there the empty space shows up. Why is the height for the second item calculated twice as high as it needs to be? (This happens when I set the number of columns to 4, 5, 6, etc...always the second item is calculated too high).

x x x

x 0 x

x x x