List of steps to reproduce (step by step, including full links if applicable):
- create a template that contains a parameter with an alias but without a label
- go into visual editor to edit this template
- click on add more information
- delete the parameter with the trash icon
- click on add more information again
What happens?:
you see now the parameter twice - once with its primary name and once with its alias
What should have happened instead?:
the parameter should only be displayed one with its primary name
Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc: