diff -r 9f3fe52b7a2e roundup/cgi/form_parser.py
--- a/roundup/cgi/form_parser.py	Thu Apr 21 17:35:55 2022 -0400
+++ b/roundup/cgi/form_parser.py	Tue Apr 26 15:01:18 2022 +0200
@@ -1,7 +1,7 @@
 import re, mimetypes
 
 from roundup import hyperdb, date, password
-from roundup.cgi import templating
+from roundup.cgi import templating, TranslationService
 from roundup.cgi.exceptions import FormError
 
 
@@ -38,7 +38,7 @@
             self._ = self.gettext = client.gettext
             self.ngettext = client.ngettext
         except AttributeError:
-            _translator = templating.translationService
+            _translator = TranslationService.get_translation()
             self._ = self.gettext = _translator.gettext
             self.ngettext = _translator.ngettext
 
diff -r 9f3fe52b7a2e roundup/cgi/templating.py
--- a/roundup/cgi/templating.py	Thu Apr 21 17:35:55 2022 -0400
+++ b/roundup/cgi/templating.py	Tue Apr 26 15:01:18 2022 +0200
@@ -197,13 +197,7 @@
 markdown = _import_markdown2() or _import_markdown() or _import_mistune()
 
 # bring in the templating support
-from roundup.cgi import TranslationService, ZTUtils
-
-### i18n services
-# this global translation service is not thread-safe.
-# it is left here for backward compatibility
-# until all Web UI translations are done via client.translator object
-translationService = TranslationService.get_translation()
+from roundup.cgi import ZTUtils
 
 def anti_csrf_nonce(client, lifetime=None):
     ''' Create a nonce for defending against CSRF attack.