https://bugzilla.redhat.com/show_bug.cgi?id=2164233
--- Comment #5 from Akira TAGOH tagoh@redhat.com --- What I can say is that 12 of reference count is too much. there should definitely be a memory leak in openttd, possibly not freed FcPattern which have a reference to those caches. check around code where use FcFontList or FcFontMatch in openttd.