In the message catalog for printconf there is a message

#. ../gui/printconf-gui.glade:1570 ../gui/printconf-gui.glade:3545
#: ../gui/printconf-gui.glade.str:243
msgid ""
"Translate \n"
" => \r\n"
msgstr ""
"Vversdtt \n"
" => \r\n"

(I'm using the Swedish translation for illustration, but that's not
important.)  This first makes sense when looking at it in the message
catalog file.  But these strings are interpreted as in C code, so the \n
and \r will be translated to the corresponding control characters.  That's
probably not intended.  There is another message in the same file:

#: ../util/printconf_tui.py:1205
msgid "Translate \\n->\\r\\n"
msgstr "Vversdtt \\n->\\r\\n"

I believe the first message should have looked this way too.

Disclaimer:  I can't install and verify this on any machine right now.  But
since this might be urgent, with the lead time necessary for translations,
I didn't want to delay reporting it until I could verify it.  I apologise
if my assumptions are wrong and this report is incorrect.