Issues with hover_text

I think this is the right place to ask this? Apologies if not. I’m trying to apply custom hover_data to my (the go.Bar() just wasn’t as suitable here).

I can’t seem to get rid of this default text. Its even displaying the column name I’m supplying for the text within the hover panel itself (‘htext=’). How does one remove all this extra stuff in blue? Is there something in update_layout, perhaps?..

I’m sure there’s something obvious I’m missing, but I don’t see many hover kwargs for and Google isn’t helping…