Folium unable to add multiple points with "same" icon

Question

I'm having trouble adding multiple markers with same icon style in folium.

First I declared icon:

icon_blue = folium.Icon(color='blue', icon_color='white', icon='info-sign')

Later on I wrote

folium.Marker(
    location=latlng_start,
    popup=text_start,
    tooltip=text_start,
    name=text_start,
    icon=icon_blue,
).add_to(map1)

folium.Marker(
    location=latlng_end,
    popup=text_end,
    tooltip=text_end,
    name=text_end,
    icon=icon_blue,
).add_to(map1)

And when I do this, I get output like:

Basically, a singleton point, with no tooltip or any data attached to it.

The issue disappears when I delete icon=icon_blue but it also disappears if I make a copy of icon_blue:

icon_blue_copy = folium.Icon(color='blue', icon_color='white', icon='info-sign')

And then for the second one write:

folium.Marker(
    location=latlng_end,
    popup=text_end,
    tooltip=text_end,
    name=text_end,
    icon=icon_blue_copy,
).add_to(map1)

To get desired output

The problem is, why do I need to make these copies? is this some sort of Folium bug, or is this something to do with python?

Answer 1

Instead of defining,

icon_blue = folium.Icon(color='blue', icon_color='white', icon='info-sign')

setting the icon inside the marker as,

folium.Marker(
  location=latlng_end,
  popup=text_end,
  tooltip=text_end,
  name=text_end,
  icon=folium.Icon(color='blue', 
                   icon_color='white', 
                   icon='info-sign')
).add_to(map1)

worked for me.