diff --git a/app/controllers/pull_requests_controller.rb b/app/controllers/pull_requests_controller.rb
index 2e8855026..b4bda5c8a 100644
--- a/app/controllers/pull_requests_controller.rb
+++ b/app/controllers/pull_requests_controller.rb
@@ -186,9 +186,14 @@ class PullRequestsController < ApplicationController
             fixed_version_id: params[:fixed_version_id],
             issue_tags_value: params[:issue_tag_ids].present? ? params[:issue_tag_ids].join(",") : "",
           }
+
           if params[:issue_tag_ids].present? && !@issue&.issue_tags_relates.where(issue_tag_id: params[:issue_tag_ids]).exists?
-            @issue&.issue_tags_relates&.delete_all
+            @issue&.issue_tags_relates&.destroy_all
+            params[:issue_tag_ids].each do |tag|
+              IssueTagsRelate.create(issue_id: @issue.id, issue_tag_id: tag)
+            end
           end
+
           if @issue.update_attributes(issue_params)
             if @pull_request.update_attributes(local_params)
               gitea_request = Gitea::PullRequest::UpdateService.new(current_user, @repository.try(:identifier), requests_params, @pull_request.try(:gpid)).call