Starting in 1.39.0, - https://codepen.io/etpinard/pen/jKgNPW using https://cdn.plot.ly/plotly-1.39.0.js works fine - https://codepen.io/etpinard/pen/LrwPVm using https://cdn.plot.ly/plotly-1.39.0.min.js fails to render the tiles. This one will be fun to debug :expressionless: