rpmdiff found this:
gedit 1 file grew significantly on s390x:
/usr/lib64/gedit/plugins/externaltools.plugin: from 247 to 10179 bytes (+4021%)
VERIFY gedit 2 files shrank significantly on s390:
/usr/lib/gedit/plugins/snippets.plugin: from 9036 to 247 bytes (-97%)
/usr/lib/gedit/plugins/sort.plugin: from 9864 to 425 bytes (-95%)
So i guess sometimes the translations aren't getting merged into the plugin right. maybe an intltool bug or parallel build problem or something. should investigate.