geom_step() behaves strangely when inverting colors

[matiasandina]

library(ggplot2)
library(ggdark)
set.seed(1)

df <- data.frame(x=1:100, y = rnorm(100))
ggplot(df, aes(x, y))+
  geom_point() +
  dark_theme_bw()
#> Inverted geom defaults of fill and color/colour.
#> To change them back, use invert_geom_defaults().

# This should work for both step and point
ggplot(df, aes(x))+
  geom_step(aes(y=cumsum(y), group=1))+
  geom_point(aes(y=cumsum(y)))+
  dark_theme_bw()

  
# This is the expected output, right?
ggplot(df, aes(x))+
  geom_step(aes(y=cumsum(y), group=1), color="white")+
  geom_point(aes(y=cumsum(y)))+
  dark_theme_bw()

# let's call it normally
ggplot(df, aes(x))+
  geom_step(aes(y=cumsum(y), group=1))+
  geom_point(aes(y=cumsum(y)))

invert_geom_defaults()
# now step gets inverted
ggplot(df, aes(x))+
  geom_step(aes(y=cumsum(y), group=1))+
  geom_point(aes(y=cumsum(y)))

^{Created on 2023-01-05 by the reprex package (v2.0.1)}