修改

app/controllers/issues_controller.rb

@@ -389,7 +389,7 @@ class IssuesController < ApplicationController
   end
 
   def check_issue_permission
-    unless !@project.public? && (@project.member?(current_user) || current_user.admin? || (@project.user_id == current_user.id))
+    unless !@project.public && (@project.member?(current_user) || current_user.admin? || (@project.user_id == current_user.id))
       normal_status(-1, "您没有权限")
     end
   end