How to create an Issue in GitLab
The issue tracker is a good place to add things that need to be improved or solved in a project.
Go to the project where you'd like to create the issue and navigate to the Issues tab on top.
Click on the New issue button on the right side of your screen.
At the very minimum, add a title and a description to your issue. You may assign it to a user, add a milestone or add labels (all optional).
When ready, click on Submit issue.
Your Issue will now be added to the issue tracker of the project you opened it at and will be ready to be reviewed. You can comment on it and mention the people involved. You can also link issues to the merge requests where the issues are solved. To do this, you can use an issue closing pattern.