The Pop up Calendar for a date field is displaying incorrectly.
This display is caused by the Zoom setting of the user's browser being set to a value less than or greater than 100%.
Setting the Browser Zoom setting back to 100% will correct this.
The Browser Zoom settings can be found for commonly used browsers using the following:
Chrome-Tool bar found in the upper right corner.
Firefox- Tool bar found in the upper right corner.
IE- Under the View menu>Zoom> % settings.
Safari- Under the View menu>Zoom settings.