hadley/ggplot2 — comment on commit 9fb2a973166c2e60ea057c8e072804de8369f3a8
File: R/facet-locate.r line 14
By kohske:

This is a bug (?) of `reshape2::add_margins` that has not been fixed.
So one test fails.

I will write tests for data with duplicated rows (probably used for stat_sum, stat_bin, etc).