Can't remove gridlines when plotting with geom_sf

This issue was raised on the ggplot2 github site. You can remove the gridlines by either of:

1. Setting the colour of the gridlines to be transparent with theme(panel.grid.major = element_line(colour = "transparent"))

2. Adding coord_sf(datum = NA) after calling geom_sf

Another way to remove the gridlines is to change the scale using scale_x_continuous:

library(ggplot2)world <- rnaturalearth::ne_countries(scale = "medium", returnclass = "sf")crs_robinson = "+proj=robin +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m no_defs"ggplot() +   geom_sf(data = world, color="grey70", fill="grey70")  +  theme(panel.border=element_blank(),        panel.grid = element_line(colour = "grey70", size=2),        axis.text.x= element_blank(),        axis.text.y = element_blank()) +   labs(title = str_c("Map of without gridlines") ,       x = "",       y = "") +  scale_x_continuous(breaks = c(-180, 180)) +  scale_y_continuous(breaks=c(-89.999, 89.999)) +  coord_sf(crs = "+proj=robin +lon_0=0 +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m no_defs", expand = TRUE)no_defs", expand = TRUE)

PS: Note that that for x scale_y_continuous(breaks=c(-90, 90)) gives an error.