diff -r 829052890acb -r 9f2bc483b7ec vendor/plugins/redmine_tags/assets/javascripts/tags_input.js
--- a/vendor/plugins/redmine_tags/assets/javascripts/tags_input.js
+++ b/vendor/plugins/redmine_tags/assets/javascripts/tags_input.js
@@ -31,7 +31,7 @@
 		
 		var uri_params = window.location.href.toQueryParams();
 		if (uri_params["project[tag_list]"] != undefined){
-			this.addTag(uri_params["project[tag_list]"], true);			
+			this.addTag(uri_params["project[tag_list]"].stripTags(), true);			
 		};
 		
     Event.observe(this.button, 'click', this.readTags.bind(this));