Issue when changing popup attribute

[VasavanThiru]

If popup attribute has already been set up, when you change it, it not works immediately.

For instance :

from ipyleaflet import *
import ipywidgets as w
from ipywidgets import HTML

m = Map(center = (46,0), zoom = 3)

slider = w.FloatLogSlider(max=10,value = 2 )
marker = Marker(location = (46,0))
marker.popup = slider     # popup attribute  
m.add_layer(marker)

marker.popup = HTML(" hello")        #Popup attribute is changed but will not be viewed immediately