Hover tool does not work with Step glyph

Community Support
1

Using Bokeh 2.2.3, given

from math import sin
from random import random

from bokeh.io import output_file, show
from bokeh.models import ColumnDataSource, HoverTool
from bokeh.plotting import figure

list_x = list(range(100))
list_y = [random() + sin(i / 20) for i in range(100)]
desc = [str(i) for i in list_y]

source = ColumnDataSource(data=dict(x=list_x, y=list_y, desc=desc))
hover = HoverTool(
    tooltips=[("index", "$index"), ("(x,y)", "(@x, @y)"), ("desc", "@desc"),]
)

p = figure(plot_width=400, plot_height=400, tools=[hover], title="Belgian test")
p.step("x", "y", source=source, line_width=2)

output_file("test.html")
show(p)

the hover tooltips are not working. When using p.line instead of p.step in line 21 hover tooltips are shown though. Is this expected, documented, a bug, or am I missing something?

2

Which glyphs support which kinds of hit-testing is documented in the wiki:

Glyph Hit Testing Census · bokeh/bokeh Wiki · GitHub

Presently the step glyph does not support any of the hit-testing methods.

3

Thanks for the fast reply and pointer to the docs!