Bug in add_hline for x axis of type datetime?

Having a go figure with x-axis of type DateTime, the snippet

fig.add_hline(y=10, row=3, col=‘all’, annotation_text=’…’, annotation_font_color=“red”)

changes the range of the x-axis to start with 1970/1/1 which is obviously wrong. This happens in Dash, but not in a Jupyter Notebook. Is this a known bug, or what else?

Plotly version 4.14.3.


Solved by myself.
I had to upgrade Dash itself :slight_smile: