Confirmed in Safari 12 (on browserstack).

I'm thinking this has to do with Safari's default CSS, but I could be wrong.

Thanks for posting.

I can't get to reproduce the behavior outside of codepen.io. @Sschumac are you affected by the problem outside of codepen.io?

Yes, affected in the browser environment with that exact graph using react plotly component factory.

Hi - we are currently trying to tidy up Plotly's public repositories to help us focus our efforts on things that will help users most. Since this issue has been sitting for several years, I'm going to close it. If it's still a concern, we'd be grateful if you could open a new issue (with a short reproducible example if appropriate) so that we can add it to our backlog. Thanks for your help - @gvwilson