Plotly express mulicolumn plot annotations missing?

Hi all

got mulicolumn working since installing plotly 4.8 BUT the annotations are missing from the mulicolumn plot?

so the code line is

px.line(df_line_plot, x= 'date',  y= ['iv_pctile','h_l_25'], color ='symbol'

which results in this note the ‘h_l_25’ lines are at the top and have no value annotations. What am I doing wrong please