Hi @Vanessa De Boeck Welcome to the Community!
As per your attachment, it is an epic name as a label next to the task. If you will add any issue under the epic, the epic name will be shown next to the issue in backlog view.
But if you want to show the label next to the issue name you can change the issue details view.
Go to Board Setting-> Issue Details View-> Add Label
I hope it will help you.
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