There is two examples of edits taged as done with VE, where <h2> tags have been introduced:
*The Island, seuls au monde
*Chloé Sauvourel
Based on that feedback.
Description
Description
Related Objects
Related Objects
Event Timeline
Comment Actions
I wonder if this is related to T134593: Intermittent corruptions on saves, likely related to data-parsoid mis-matches.
I had mentioned there that we could probably add some heuristics to detect these data-parsoid mismatch scenarios ... maybe worth reviving that idea.
Comment Actions
@Jdforrester-WMF, @Trizek-WMF, it would be useful to ask those editors who reported these bugs if they did any copy-paste of wikitext.
Comment Actions
I'm contacting the first one. That account doesn't have a lot of activity.
The second one is an IP and I can't expect an answer.
@NicoV may have noticed some other cases which may have been done by a more active user.
Comment Actions
@Trizek-WMF Not much time to check what's happening, but you can use CW lists to have a quick glance at potential candidates.
For example, the list for frwiki
https://tools.wmflabs.org/checkwiki/cgi-bin/checkwiki.cgi?project=frwiki&view=only&id=49
which immediately gives the following example
https://fr.wikipedia.org/w/index.php?title=Il_faut_beaucoup_aimer_les_hommes&action=historysubmit&type=revision&diff=129665283&oldid=128474239
CW also generates lists for other wikis, but I don't know for which there are people actively fixing them.
Maybe itwiki...
https://tools.wmflabs.org/checkwiki/cgi-bin/checkwiki.cgi?project=itwiki&view=only&id=49
gives several hits
https://it.wikipedia.org/w/index.php?title=Alessandro_Velotto&diff=prev&oldid=82943274
https://it.wikipedia.org/w/index.php?title=Metro_Olografix&action=historysubmit&type=revision&diff=82749560&oldid=82732598
https://it.wikipedia.org/w/index.php?title=Cenerentola_(film_1950)&diff=82343396&oldid=82242184
https://it.wikipedia.org/w/index.php?title=Cenerentola_(film_1950)&diff=82218894&oldid=82205479
...
Comment Actions
I asked some of the users in itwiki if they remember how they have done the edits that added the <h2> tag. If the answer me with useful infos, I report them.
Comment Actions
A user told me he had done a copy-paste from a page in VE edit mode to another one in VE edit mode. Unfortunately, his edit was done on June, 21st, so the system has been updated on itwiki and I can't reproduce the issue.
Comment Actions
It's possible that this will now be fixed by T146054: VE should strip element ids from HTML that it generates when wikitext is pasted (which will go into production from 25 October). Consequently, let's come back to this in a month and see if it's re-occurred after that.