Newline is matched only when adding a bracket to s in `(s)*R` in Regex in Ahk?

Newline is matched only when adding a bracket to s in (s)*R in Regex in Ahk?

Newline is matched only when adding a bracket to s in `(s)*R` in Regex in Ahk?

Newline is matched only when adding a bracket to s in (s)*R in Regex in Ahk?