Reader mode button doesn't show up on Plus Minus articles on rp.pl

[gijsk]

Originally filed at: https://bugzilla.mozilla.org/show_bug.cgi?id=1965770

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:138.0) Gecko/20100101 Firefox/138.0
Steps to reproduce:

open any article from Plus Minus section of rp.pl (https://www.rp.pl/plus-minus/), eg. https://www.rp.pl/plus-minus/art42248991-jan-oldakowski-co-dzieci-pamietaja-z-czasow-wojny-chcemy-ocalic-te-wspomnienia

Actual results:

There is no reader button

Expected results:

There should be a button.

---- more info
This is mostly visible and quite annoying on Firefox mobile where it would be most welcomed.

I think the issue is that rp.pl has really, really odd way of handling user session so it quite often (always?) load paywall page and then detects cookies and reloads the page, but then the button is missing… And PlusMinux columns are quite lenghy so having more readable view (as well as reading time estimate) would be very welcomed.

I tried setting reader.parse-on-load.enabled in about:config (not available or mobile) or using https://addons.mozilla.org/en-US/firefox/addon/activate-reader-view/ but withough much luck.

It would be great to have an option to force-dispay the button always…

[gijsk]

I don't have a login so I don't know what this looks like when the article fully loads, but when it doesn't, the main issue seems to be that the small amount of content that is in paragraph tags is in such small containers that none or hardly any of the content meets the minimum content threshold:

readability/Readability-readerable.js

Line 61 in a07e62c

minContentLength: 140,

This means we don't find enough content to score the page and decide there isn't anything there for reader mode to show.

It would be good to understand if, after logging in, if refreshing the page makes any difference, or if the page content loads after we make the readability determination and therefore the result is the same (which may be the case based on the initial description, but is difficult to tell without being able to reproduce).