It happens at least since version 1.2.4. There is a comma missing for translation of $s_resolution_enum_string. To arrange it, add a comma (,) just before "80:" in file lang/string_catalan.txt for $s_resolution_enum_string translation.

Here it is:
$s_resolution_enum_string = '10:obert,20:arreglat,30:reobert,40:no es pot reproduir,50:no es pot corregir,60:duplicat,70:no es requereixen canvis,80:suspès,90:no s\'arreglarà';