commentReply is undefined in the editor screen

[Clorith]

When editing posts or pages you hit an error with commentReply being undefined halting all future js execution.

post.js:271 contains the code commentReply.close(); which halts execution and makes the "You are leaving this page" warning show up when saving draft and publishing posts and pages

[SergeyBiryukov]

Introduced in [33024]. I could not reproduce the error so far, are there any specific steps?

[Clorith]

It only kicks in on a new post or page, it could seems like the metabox the javascript function references isn't included in post_new.php, but it exists in post.php perhaps?

Editing an existing post or page will not lead to this behavior, nor will it happen again after saving as a draft or publishing once (so you need to click the "Leave this page" link once no matter what).

[SergeyBiryukov]

Reproduced on Add New Post screen, edit-comments.js is not enqueued there.

We should just check if commentReply is set before calling commentReply.close().

[obenland]

Didn't see this ticket before fixing it. Thanks for the report!
Fixed in [33066].