I created this plot https://plot.ly/~empet/14398/shapes-and-lines-in-mapbox-via-geojson-data/ a month ago, as an answer to a question addressed here on forum. Today I clicked the link to inspect the plot again to be sure that it gives an answer to another question, but I noticed that hovering over the colored points the tooltips are not displayed.
Today it works for me, too. Yesterday I opened this plot with two different browsers and no one displayed the tooltips. I’m sorry