Plotly hover boxes and text all white

Hi there,

I’m using plotly express scatter plots to make 2D UMAP/tSNE plots. The dataset is of over 20k news articles, and as the hover title I’m trying to use the article headline. As you can see in the first screenshot, the hover boxes and hover text are completely white. Have repeated it a few times and the outcome is the same. Interestingly, the hover boxes of the 3D plots of the same data work absolutely fine (second image).

Does anyone know how I can fix this?

Code is as follows:

fig = px.scatter(
    projections, 
    x=0,
    y=1,
    color=df2['topics'],
    hover_name=df2['article_title']
)
fig.update_layout(
    autosize=False,
    width=1000,
    height=800
)
fig.show()

Many thanks

Tom