Issue Summary

Attempting to create an issue in a plan without having the "Schedule Issue" permission for the affected project will lead to errors when saving the plan. Although the issue is created successfully, this can result in duplicate issues.

Steps to Reproduce

1. Create a Project "ABC"
2. Create an Advanced Roadmap Plan with the issues from "ABC" project.
3. Remove yourself from "Schedule Issues" permission from "ABC" project.
4. From your Plan, click on "+ Create Issue"
5. Try saving changes after creating an issue from the Plan. An error will be returned, but the issue will still be created. However, the original issue created will still be visible in the Plan, causing duplication of issues.

Expected Results

The issue shouldn't be created at all if there are errors returned. Otherwise, it should return success.

Actual Results

An error is thrown: "Changes couldn't be saved", but the issue is created regardless.

Workaround

Add yourself to 'Schedule Issues' permission for the affected project.