[Atomic] Comments not working on password protected posts & pages in some browsers

*2023-04-13 Update from *[*recent troubleshooting*]()*, thanks @masperber !*

* *This bug only affects Atomic sites.*
* *This bug affects both FSE and Classic themes.*
* *This bug affects the Chrome and Opera browsers.*
* *This bug does not affect the Firefox and Safari browsers.*

---

### Steps to Reproduce

[**WordPress.com**]()

1. On an AT site create a password protected post
2. Attempt to comment on that post

**Self-hosted WordPress**

1. Enable Jetpack
2. From Jetpack > Settings > Discussion enable 'Let visitors use a [WordPress.com](), Twitter, Facebook, or Google account to comment'
3. Create a password protected post
4. Attempt to comment on that post

### What I expected to happen

Comments should be accepted and added to the post when a comment is typed and 'post comment' is clicked.

### What actually happened

After writing a comment and clicking 'post comment' there is a pause and then the comment box disappears. No comment is visible on the post itself nor in the site owner's list of comments.

### Context

This was reported here: 4266004-zd-woothemes

I tested on my own site with user's `illustratr` theme and `twenty twenty`. I also tested with all user plugins disabled. Neither affected this issue. I could not post a comment.

I was able to post a comment when attempting to post as the site owner while using the healthcheck plugin in troubleshooting mode.

Deactivating the Jetpack comments module on the [WordPress.com]() site allowed the comment to be posted.

Disabling 'Let visitors use a [WordPress.com](), Twitter, Facebook, or Google account to comment' from Jetpack > settings > discussion on the self hosted site allowed a comment to be posted.

### Operating System

macOS

### OS Version

11.5.2

### Browser

Chrome/Chromium

### Browser Version(s)

92.0.4515.159

### Is this specific to applied theme? If so, what is the theme name?

No

### Simple/Atomic

Atomic

### Console and/or error logs

*No response*

### Number of Users Impacted

Some users (<50%)

### Available Workarounds

Deactivating the Jetpack comments module on the [WordPress.com]() site allowed a comment to be posted.

Disabling 'Let visitors use a [WordPress.com](), Twitter, Facebook, or Google account to comment' from Jetpack > settings > discussion on the self hosted site allowed a comment to be posted.

### Reproducibility

Consistent

### Other information

*No response*

Start with the Jetpack comments module and reproduce the password-protected-post flow in Chrome or Opera, comparing it with Firefox or Safari. Check whether the comment submission is lost after the comment box disappears; done means comments are accepted and visible on the post and in the site owner's comment list without disabling the module.

Written by the indexing model from the issue text.