I encountered a new error about the geom_arrow function in ggbio package that shows up after the recent update of ggplot2 package. Here is a reproducible example from the example code of geom_arrow function:

set.seed(1)
N <- 100
require(GenomicRanges)
## ======================================================================
##  simmulated GRanges
## ======================================================================
gr <- GRanges(seqnames = 
              sample(c("chr1", "chr2", "chr3"),
                     size = N, replace = TRUE),
              IRanges(
                      start = sample(1:300, size = N, replace = TRUE),
                      width = sample(70:75, size = N,replace = TRUE)),
              strand = sample(c("+", "-", "*"), size = N, 
                replace = TRUE),
              value = rnorm(N, 10, 3), score = rnorm(N, 100, 30),
              sample = sample(c("Normal", "Tumor"), 
                size = N, replace = TRUE),
              pair = sample(letters, size = N, 
                replace = TRUE))

## ======================================================================
##  default
## ======================================================================
ggplot(gr) + geom_arrow()
# or
ggplot() + geom_arrow(gr)

Error: Don't know how to add o to a plot

I think this has something to do with the new ggplot2 release because this code works fine a few weeks ago. I tried running this in R/3.5.0 and R/3.5.1 and both failed.

Does anyone know how to resolve this error?

Thanks