Bullet-chart problem for high number of items

Hello, I’m trying to use bullet charts to show some values related to the last 12 months.
I’ve started from the example here https://plot.ly/python/bullet-charts/
It works quite smooth if you need few items in the charts, but when i try to add more items I can’t control their size: it looks like they are resized automatically and when i reach 10 items they plot goes literally crazy. I’m attaching the evolution here.
Is there any way to avoid this behavior? I’d basically like to control bar widths, and not having them resized when the number is high.
For the moment the only workaround i can think is to call the plot function with the output_type div singularly for each bullet (month) i want. But 1) i’m still working on it and 2) it doesn’t seem an efficient way

thank you!