I have noticed that when adding bootstrap css file even before the <link rel="stylesheet" href="http://js.arcgis.com/3.13/esri/css/esri.css"> css file, I loose the little help message when selecting a draw tool. this image shows what I mean. I am wondering what css object boostrap is affecting for this help floating message. does anyone ever notice this?
Richard,
this should answer your question:
tooltip for draw tools not showing when using Bootstrap/JQuery
Tim