We had a redirect inside of the loop, so it wouldn't finish the updates before going to the next page. This was more of an issue with the code on the page than the include. The include was actually fixed in v2.22 because it shouldn't allow further updates after the page redirect.
I fixed the page by updating the loop on updatecategory.php. You will see that I moved these lines:
$UpdateGoTo = "dashboard?view=categories";
if (function_exists("rel2abs")) $UpdateGoTo = $UpdateGoTo?rel2abs($UpdateGoTo,dirname(__FILE__)):"";
down below the close of the while loop.