How do I disable the annoying garbling of multiline comments in Common Lisp

Question

In Common Lisp you can define multiline comments with #| \n\n\n |#.

However when I press Return with cursor above such comment, each line of the comment is appended with ' ;' and pressing Return multiple time can result in many ; ; ; ;.

;; aaa.lisp

(warn "beginning")






#|
                    ; ; ; ; ;
ala ma              ; ; ; ; ;
kota                ; ; ; ; ;
                    ; ; ; ; ;
|#

(warn "end")

That is very annoying.

I suspect the culprit is the code indicated below, but I do not know how to fix it. If there is no easy fix, do you suggest any alternatives?

emacs-31/lisp/newcomment.el::1117

(defun comment-add (arg)
  "Compute the number of extra comment starter characters.
\(Extra semicolons in Lisp mode, extra stars in C mode, etc.)
If ARG is non-nil, just follow ARG.
If the comment starter is multi-char, just follow ARG.
Otherwise obey `comment-add'."
  (if (and (null arg) (= (string-match "[ \t]*\\'" comment-start) 1))
      (* comment-add 1)
    (1- (prefix-numeric-value arg))))

Alternative

I can select a region and then press C-x r t for the command string-rectangle. The command asks me for the character, so I enter the comment characters ';;'. That gives me the same as the multiline comment but without the problem with garbling by adding the ; at column 40.

It's Paredit related problem

Commenting out these two lines hides the problem https://github.com/bigos/prelude/blob/c4a2e859fe11a0d5731d2109ecf253d51b0301d0/personal/organised.el#L845

Minimal configuration

Starting Emacs with minimal configuration https://github.com/bigos/Pyrulis/blob/master/Emacs/problem-with-paredit-garbling-multiline-comments.org#replicating-minimal-config

and trying to edit example Common Lisp file with multi line comment, still shows the problem.

(require 'package)

(add-to-list 'package-archives
             '("melpa" . "https://melpa.org/packages/") t)

(unless (package-installed-p 'paredit)
  (package-install 'paredit))

(add-hook 'lisp-mode-hook 'enable-paredit-mode)

;; end of init.el -----------------------------

Answer 1

Possible fix

Adding the following to my configuration seems to fix the problem. https://github.com/bigos/prelude/commit/69d16f230570e7e255bca9bd9550e088a5bd75ba

(eval-after-load 'paredit
  '(progn
     (define-key paredit-mode-map (kbd "RET") nil)
     (define-key paredit-mode-map (kbd "C-j") nil)))

It was inspired by the following line: https://paredit.org/cgit/paredit/tree/paredit.el#n118