Usually, a pipe character doesn’t position the same as other characters, it’s a special symbol. Try typing a words consists of many characters and a pipe, and a slash, a square bracket, and see how they position differently in the same font settings.
Also the font stack defined for this area are too limited, so it falls back to browser default, even make it look more different.
Here is the shot comparing one in FF and one in Chrome. See with 2 different browser default fallback fonts, still look centered.
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Maybe there’s a better way to style this. But from what I look, it’s pretty centered to me, better change its opacity or use different color to compliment the design.