I noticed after deleting an attribute and later creating it again with the same name that two Attributes are showing up. I deleted one of them and both were deleted. Then I created the attribute again and as you can see on the image 3 showed up. Row only one shows up.
TL;DR
Issue: When a developer deletes and recreates an attribute with the same name, duplicates are appearing instead of just one.
Solution: Clear cache and refresh the page to resolve the issue. This should ensure that only one instance of the attribute appears as intended.