First of all, PostScript can have \r, \n, or \r\n line endings or any combination thereof. So the blame should be directed to gv, rather than ps2epsi.
Yet, inconsistent line endings look strange. The original gs has \n everywhere; it never had this bug. Somebody has introduced it in the distribution. Please roll this change back.
--- /usr/share/ghostscript/9.10/lib/ps2epsi.ps 2015-07-29 16:51:57.000000000 -0400 +++ ghostscript-9.18/lib/ps2epsi.ps 2015-10-05 04:21:11.000000000 -0400 @@ -190,8 +190,8 @@ epsifile (\n) writestring epsifile flushfile - epsifile BBoxString writestring epsifile (\r) writestring - epsifile HiresBBoxString writestring epsifile (\r) writestring + epsifile BBoxString writestring epsifile (\n) writestring + epsifile HiresBBoxString writestring epsifile (\n) writestring % Define character and bit widths for the output line buffer: /cwidth rm lm sub 1 add def