--- src/ncurses-5.7/form/frm_driver.c        2008/10/18 16:25:00     1.88 
+++ src/ncurses-5.7/form/frm_driver.c        2008/12/06 23:08:12 
@@ -4366,6 +4366,7 @@ 
       delwin(field->working);
       field->working = newpad(field->drows, field->dcols);
     }
+  len = Buffer_Length(field); 
   wclear(field->working);
   mvwaddstr(field->working, 0, 0, value);