Bubble size seems to be bugged, and minSize/maxSize does not work

[EnisBldMove]

I've noticed that bubble size seems to be bugged.
In the example below, changing minSize and/or maxSize does not change anything.
If we remove the 'bubble' property, and try to display bubbles with very close sizes (such as the example below), there is one that will be very tiny.

This works in Highcharts itself, so the problem seems to be in the library.

---

from highcharts import Highchart
H = Highchart(width=850, height=400)

options = {
'chart': {
'type': 'bubble',
'zoomType': 'xy'
},

   'bubble': {
        'minSize': 1,
        'maxSize': 10
 },

'title': {
    'text': 'Highcharts Bubbles'
},

}

data1 = [[97, 36, 79]]
data2 = [[25, 10, 78]]
data3 = [[47, 47, 77]]

H.set_dict_options(options)
H.add_data_set(data1, 'bubble')
H.add_data_set(data2, 'bubble')
H.add_data_set(data3, 'bubble')

H