1809454 - Failed to save PDF annotations (Error when saving the document: this.parent is null)

Status: RESOLVED FIXED

(Firefox :: PDF Viewer, defect)

Description

[Haowei Wen]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0

Steps to reproduce:

1. Open a PDF file which is long enough (mine is 34 pages).
2. Make an annotation on the first page.
3. Scroll to the last page.
4. Press Ctrl+S and save the annotated PDF.

Actual results:

1. The annotation is NOT saved.
2. There is an error log in the console:

Error when saving the document: this.parent is null viewer.js:1914:15
    save resource://pdf.js/web/viewer.js:1914
    downloadOrSave resource://pdf.js/web/viewer.js:1931
    webViewerDownload resource://pdf.js/web/viewer.js:2842
    dispatch resource://pdf.js/web/viewer.js:3373
    handleEvent resource://pdf.js/web/viewer.js:11932

It's probably because the page where the annotation locates has been unloaded. If I scroll to where I made the annotation, the annotated PDF can be saved successfully.

Expected results:

The PDF annotation should be saved, and no error should occur.

Comment 1

[Haowei Wen]

If you can't reproduce this bug, please try:

1. scrolling over the last few pages to ensure the first page is unloaded
2. keeping the thumbnail sidebar collapsed

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::PDF Viewer' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[Calixte Denizet (:calixte)]

It should be fixed in nightly:
https://github.com/mozilla/pdf.js/issues/15780

Could you make a try with the last nightly ?
https://www.mozilla.org/en-US/firefox/channel/desktop/

Comment 4

[Haowei Wen]

Thank you. I switched to Firefox Nightly and it works fine now.