Anchors are broken when there are 2 header with the same label and the label includes an emoji

[patricklafrance]

In the same page, I have the same header twice: ### Try it :rocket:

The page structure is similar to the following:

# Page title

## Section 1

### Add new files

### Try it :rocket:

## Section 2

### Add new files

### Try it :rocket:

The anchors generated for "Add new files" are working fine:

However, the anchors for "Try it :rocket:" are not working (the whole scrolling behavior is broken after the first click on "Try it"):

Thank you,

Patrick