text-align-last : start

X X X XXX

text-align-last : end

X X X XXX

text-align-last : left

X X X XXX

text-align-last : right

X X X XXX

text-align-last : center

X X X XXX

text-align-last : justify

X X X XX X

Since text-align is justify, text-align-last property should be respected, thus the alignment of the last line in each box should be as defined by text-align-last.