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 -r1.284.2.13 -r1.284.2.14
--- openacs-4/packages/xowiki/tcl/form-field-procs.tcl	21 Jun 2019 11:53:39 -0000	1.284.2.13
+++ openacs-4/packages/xowiki/tcl/form-field-procs.tcl	24 Jun 2019 11:28:29 -0000	1.284.2.14
@@ -929,7 +929,7 @@
 
   file instproc convert_to_internal {} {
 
-    if {[:no_value_provided]} {
+    if {[:no_value_provided] || ![info exists :content-type]} {
       ${:object} set_property -new 1 ${:name} [:get_old_value]
       return
     }