Steps to reproduce
Try http://ie.microsoft.com/testdrive/HTML5/BlobBuilder on a Windows Phone device.
The behavior should be the same as on the Internet Explorer for Desktop: Show the File-Save Dialog and open or save the file.
Dev Channel specific:
Comments and activity
- Microsoft Edge Team
Changed Assigned To to “Tony S.”
Changed Assigned To to “Venkat K.”
Changed Assigned To to “wwatri”
Changed Assigned To from “wwatri” to “IE F.”
Changed Status to “External”