diff -aur zsh-5.2.orig/Src/Zle/zle_keymap.c zsh-5.2/Src/Zle/zle_keymap.c
--- zsh-5.2.orig/Src/Zle/zle_keymap.c	2016-06-10 20:46:56.314722009 -0700
+++ zsh-5.2/Src/Zle/zle_keymap.c	2016-06-10 20:48:46.138119537 -0700
@@ -1503,7 +1503,7 @@
 		    f->widget->flags & ZLE_VIOPER);
 #ifdef MULTIBYTE_SUPPORT
 	    if ((f == Th(z_selfinsert) || f == Th(z_selfinsertunmeta)) &&
-		!lastchar_wide_valid) {
+		!lastchar_wide_valid && !ispfx) {
 		int len;
 		VARARR(char, mbc, MB_CUR_MAX);
 		ZLE_INT_T inchar = getrestchar(lastchar, mbc, &len);