Really strange issue. On a dashboard view inside a widget when you click on "Display a table with more metrics" icon and then close the popup, only single column is shown hiding rest of the report. And similarly on Visitor Browser widget, clicking the same button, the footer draw icon appears on top of the text. Original report and screenshots:
Steps to replicate:
Note: The only way to recover was to reload my browser .
Tested on: Firefox 32.0.3 and Safari 8.0 on Mac OSX (Yosemite)
Can't reproduce with Piwik 3.