Regex only matches in comments

[xzoky]

I created a custom rule to find instances of spaces inside parentheses.
For some reason, the rule only works inside comments, not in the rest of the code. I have no idea why.

Here's my custom rule:

parenthesis_spacing:
  name: "Parenthesis Spacing"
  message: "Don't put a space inside a parenthesis."
  regex: "\(\s|\s\)"