Column 2 Causes Overflow When Aligned at Same Depth as Column 1

[joshjacobson]

When column 2 and column 1 are the same length (or so they appear, perhaps there is a very small length difference causing this), column 2 causes overflow to the next page, while column 1 does not.

Basically, I am able to have 1 additional line on column 1 than I am on column 2. I would like to adjust it so this last line is allowed in column 2 as well.