Seems to be hardware- and OS-dependent. Eons ago, don't know the version anymore I used it under Linux out of curiosity I guess, and because some project nagged about using it for verification of written images, or else.
Anyways, that thing always complained about a bad checksum at the end, no matter which media, system, port, writer I used.
And I always thought: Oh, really? And booted the failed checksum images flawlessly. To me this thing seemed like a stupid prank, adding no value over any other method. Even less so, considering the Electron crap.
Btw. the writing checksummed perfectly fine with dd on all the media, hardware, system and ports I used.
And don't bug me with did you file a bug?
Why? They can bug off for all I care :)