diff --git a/addons/web/static/src/js/view_form.js b/addons/web/static/src/js/view_form.js
index b2a0c0d955c..8ea690412ee 100644
--- a/addons/web/static/src/js/view_form.js
+++ b/addons/web/static/src/js/view_form.js
@@ -3141,6 +3141,9 @@ instance.web.form.FieldMany2ManyTags = instance.web.form.AbstractField.extend(_.
             });
         });
         self.tags = self.$text.textext()[0].tags();
+        $("textarea", this.$element).focusout(function() {
+            $("textarea", this.$element).val("");
+        });
     },
     set_value: function(value_) {
         value_ = value_ || [];