I have set a file size limit of 4mb for the file type field.
Current behavior When a file greater than 4mb is attached (10mb.jpg) and upload button is clicked, there is a message shown that mentions. "The specified file 10mb.jpg could not be uploaded. The file is 10 MB exceeding the maximum file size of 4 MB..
Now when a file size of less than suggested limit and extensions ( 182kbs - 800px-pizigani_1367_chart_10mb.jpg) is attached and upload button hit, the message still stays and does not go away.
On attaching and hitting the upload button for the file of correct size, the error message should not be displayed.
Let me know if this has been rectified in a later release or is still occurring for others.
Note: If the upload button is not hit and directly the webform is submitted, the functionality does work fine. Thus there seems to be an issue in client side validation.