wrong detection of outlier with ggplot

[BegoniaCampos]

I found that using the same data, an outlier was detected when plotting a boxplot with "ggplot" but not with "boxplot" (base). Therefore, I performed the upper and lower inner fences calculations following Tukey (1977) and no observations in group A met the outlier criterion.

What am I missing?
Here is the code to reproduce the bug:

Groups <- factor(c(rep("A",4),rep("B",4)))
yA <- c(1.186, 1.189, 1.191, 1.206)
yB <- c(1.182, 1.185, 1.193, 1.201)
y <- c(yA, yB)dd <- data.frame(Groups, y)
boxplot(y~Groups)
ggplot(data = dd, aes(x = factor(Groups), y = y)) + geom_boxplot()
boxplot.stats(subset(dd$y,Groups=="A"))$out
fivenum(subset(dd$y,Groups=="A"))  #Tukey 1977 
#
reprex::reprex()

[teunbrand]

This is a duplicate of #281. TL;DR: yes it is different, but the difference is documented. See the 'summary statistics' section of ?geom_boxplot.