Colour order changes when changing scale

[shirdekel]

Using scale_fill_manual changes the order of the colouring in the plot, but not in the legend. If I try to give it a named vector, the plot colours are right, but the legend is wrong.

require(likert)
#> Loading required package: likert
#> Loading required package: ggplot2
library(ggplot2)
data(pisaitems)

l <- likert(pisaitems[13:17])

plot(l) +
  scale_fill_manual(values = c(
    "black",
    "pink",
    "green",
    "yellow",
    "blue"
  ))
#> Scale for 'fill' is already present. Adding another scale for 'fill', which
#> will replace the existing scale.

^{Created on 2022-10-10 with reprex v2.0.2}

Session info

sessioninfo::session_info()
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