shrink reiserfs partition gives me a problem

hi.
i have shrinked a reiserfs partition a few MB.
and at the next boot, i got a problem at filsesystem check.
then, i discovered that the resized partition does not pass the filesystem check.

i manually tried reiserfsck that tells me to run reiserfsck --rebuild-sb.
which finally works.

so it seems gparted resized the partition but not the fs or did not do it very well ?