Inconsistent color in legend when using paint_a/paint_b/paint_c

[OLarionova-HORIS]

from lets_plot import *
LetsPlot.setup_html()

d = {
    'x': [1, 2, 3, 4, 5],
    'y': [0, 0, 0, 0, 0],
    'g': ['a', 'b', 'c', 'd', 'e'],
    's': [1, 2, 3, 4, 5]
    
}

color_by_aes = ggplot(d) \
    + geom_point(aes(color='g', x='x', y='y', size='s')) \
    + ggtitle("geom_point(aes(color='g', ...))")

color_by_paint = ggplot(d) \
    + geom_point(aes(paint_a='g', x='x', y='y', size='s'), color_by='paint_a') \
    + ggtitle("geom_point(aes(paint_a='g', ...), color_by='paint_a')")

gggrid([color_by_aes, color_by_paint])