I have a simple line of code, a call to reFindNoCase

<cfdump var="#reFindNoCase( "^S(\d\d)$", "S21", 1, true )#">

The result of the call is a struct that contains three members: pos, len and match.
Match is an array. The first element contains the whole match of the regular expression. That is fine.
The second element contains the whole expression, as well. That's wrong. It's supposed to contain the matched subexpression which in the above case is number 21.
I execute the exact line of code on an Adobe ColdFusion 2018 server, which gives the subexpression and not the whole expression.
You can try it here: https://trycf.com/scratch-pad/pastebin?id=HYJNF8mH