Markdown shows blank in "view" (in an iframe) but OK in "files"

[ojncwyog]

Ex in URL (for Jupyter) http://localhost:10000/view/TensorFlow-Examples/README.md I seee the markdown for few fleeting moments followed by blank

View source shows the content in an iframe (this is Jupyter)

The URL shows HTML perfect http://localhost:10000/files/TensorFlow-Examples/README.md

Changing VIEW to FILES solves problem I use Chrome in Ubuntu 16.04

Regards