Index: openacs-4/packages/xowiki/tcl/form-field-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/tcl/form-field-procs.tcl,v
diff -u -N -r1.284.2.115 -r1.284.2.116
--- openacs-4/packages/xowiki/tcl/form-field-procs.tcl	3 Sep 2020 13:41:15 -0000	1.284.2.115
+++ openacs-4/packages/xowiki/tcl/form-field-procs.tcl	3 Sep 2020 16:20:11 -0000	1.284.2.116
@@ -672,7 +672,17 @@
   }
 
   FormField instproc convert_to_internal {} {
-    ${:object} set_property -new 1 -localized ${:language_specific} ${:name} ${:value}
+    # Do not apply any possible conversion to the name: this is a
+    # delicate property with many technical implications. Furthermore,
+    # name validation happens before this conversion is executed, and
+    # it has the side-effect of adding the eventual language prefix to
+    # the name value and store it on the Page object. Such side-effect
+    # is not reflected on the value of the FormField, and calling
+    # set_property now would override it, preventing pages from
+    # receiving their language prefix.
+    if {${:name} ne "_name"} {
+      return [${:object} set_property -new 1 -localized ${:language_specific} ${:name} ${:value}]
+    }
   }
 
   FormField instproc process_correct_when_modifier {} {