Incorrrect scaling with time series data.

[leonbaum]

I am reposting this bug from ggplot2 because kohske suggested it is caused by the scales packages.

tidyverse/ggplot2#245

The scale issue can be seen with the following command using ggplot2's develop branch:

ggplot(data = data.frame(x = Sys.time() + 1:10, y = rnorm(10)), mapping = aes(x = x , y = y)) + geom_point()