1571736 - Reader view drops parts of the page

Status: UNCONFIRMED

(Toolkit :: Reader Mode, defect, P3)

Description

[uberhumus]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

Went to:
https://varnish-cache.org/docs/trunk/users-guide/devicedetection.html
And entered "Reader view"

Actual results:

Parts of the page weren't there (Example 1 is the 1st thing I saw that was missing).

Expected results:

That the whole page will be there.

Comment 1

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

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Andrew Aitchison]

https://www.dwiggie.com/derby/2019/MorganaMoreJustifiedIn20171001.html shows the same problem - the reader view starts at Chapter 4.

Comment 3

[Andrew Aitchison]

(In reply to Andrew Aitchison from comment #2)

https://www.dwiggie.com/derby/2019/MorganaMoreJustifiedIn20171001.html shows the same problem - the reader view starts at Chapter 4.

Should have said that this is with Firefox 74.0 (64-bit) Mozilla Firefox for Ubuntu canonical - 1.0, on Ubuntu 19.10.

Comment 4

[Andrew Aitchison]

(Based upon https://bugzilla.mozilla.org/show_bug.cgi?id=1623397#c2)
#1623397 is not a duplicate of #1571736
I cannot reproduce #1623397 with either "Firefox 75.0 (64-bit) for Ubuntu canonical - 1.0",
"Firefox Preview 3 April 2020, on Android (arm)" or "Firefox 68.7.0, Android Arm" - in each case
https://www.traumaheilung.de/das-virus-und-wir/ shows the whole text (but not the images) in reader-mode.
But with these same 3 browsers, I can reproduce #1571736 as they all start https://www.dwiggie.com/derby/2019/MorganaMoreJustifiedIn20171001.html at "Chapter 4" and omit Example 1 from in https://varnish-cache.org/docs/trunk/users-guide/devicedetection.html reader-mode.

Comment 5

[scb]

https://nhigham.com/2022/05/18/the-big-six-matrix-factorizations/ shows the same problem. Reader view skips the entire section titled "LU Factorization"