(Crystal) formats integer divison incorrectly

Describe the issue Using // in crystal will make the highlighter mark the rest of the file. In crystal is // used for integer division. Code:

def something()
    something // 4
end

Which language seems to have the issue? Crystal

Are you using highlight or highlightAuto? highlight

Sample Code to Reproduce

def something()
    something // 4
end

Expected behavior The expected behavior is to not mark the rest of the code with the color green.

Additional context Nope