Revert "drop strange flag"
Revert "drop strange flag"

This reverts commit bbe25efe84d6e91b7cf699e50c1cdc6688120435.

etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js