Symptoms

When the user scrolls to the end of the K2 Worklist web part, they are unable to view the "Load 20 more item" in IE. The bottom of the worklist webpart gets cut off.
 

Diagnoses

This is a known issue on K2 for sharepoint 2013 worklist webpart when viewing it on IE. It works fine on Chrome browser.
 

Resolution

This has been logged as a bug to be fixed in a future release. There is currently no other workaround apart from using the Chrome browser which displays fine.