How to remove metric ?

This title was a topic for a question before but the topic got removed to welcome this new forum.

It seems like it should be the simplest thing, I have a graph, I have several metrics, I want to remove some.
There are no button to remove a metric.
Is it a bug?
Is there a way to do it without rebuilding the graph from scratch?
Why is it so unintuitive?

To reply to my question (again cause the forum let me write but then does not save it as I was not logged in), this appears to be a bug.

It is a bug that just acts on its own will. Sometimes a graph let me remove metrics, sometimes it just does not. It enforces metrics a number of metrics, I can change them but not remove them.
I would like to remove them to change the hover information, but it does not seem the interface allow that.

I am not super familiar with looker studio obviously, but I don’t remember data studio to be so bad.
Looker studio seems to be an incredibly frustrating, buggy and time wasting software which would otherwise be the perfect place to integrate dashboard with google sheets.