There are a set of specialized situations where inlining of velocity tools fails to deal with POST redirect pattern. This can most easily be seen by trying to upload a file in Resources from the PDA portal. You get a message
"There was a problem displaying this page, please press the reset button to get back to the main view."
This is effectively a regression as the Resources tool does not work when you are trying to upload anything in the PDA portal at all without this patch.