When you want to add a data source to [DCV validator](http://demo.visualization.linkedpipes.com/#/validator/dataCube), the input placeholder obscures the input value. See here: <img width="201" alt="screen shot 2016-05-27 at 09 41 21" src="https://cloud.githubusercontent.com/assets/198642/15601400/61a3a780-23ef-11e6-93ae-89b9fc4a1871.png"> Tested in Google Chrome 50.0.2661.102 (64-bit).
When you want to add a data source to DCV validator, the input placeholder obscures the input value. See here:
Tested in Google Chrome 50.0.2661.102 (64-bit).