Document API - hit and miss

To explain this issue, please use the followings

Apps: “http://app.livestax.com/unifiedvu/welcome/customer-intelligence
Company: Ixis IT

If you enter Ixis IT on search box and then select it, Documents tab shows the latest filings. First five documents struggle to display where as the sixth one does. Same is true with few other companies. This gives a poor user experience. Do you have any suggestions to make these work every time?