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Wikitext diff and saving not the same as what has been edited (content loss)
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Description

While editing Président (homonymie) on fr wiki, the Visual diff was strange, it showed content removal.
I thought it was a bug, but the actual result was what the Visual diff showed.
Here's a screenshot with the difference between what is being shown while editing (top of the screen) and the Visual diff:

VE bug Président_(homonymie).png (811×1 px, 87 KB)

I can't unfortunately reproduce this bug, but I thought I'd report it in case it would provide insight.

Event Timeline

Do you mean that the surface showed the content when you were editing, but wikitext diff showed it was gone (and the save agreed)?

Did you touch that line? There's no edit conflict (previous edit was in August), but did you switch between editors somehow?

Jdforrester-WMF renamed this task from Visual diff and saving not the same as what has been edited (content loss) to Wikitext diff and saving not the same as what has been edited (content loss).Mar 20 2017, 7:33 PM
Jdforrester-WMF changed the task status from Open to Stalled.

Yes, exactly, and what I called "Visual diff" is the wikitext diff shown by the VisualEditor.

Yes, I made it look like what we see above the diff. No, I didn't switch between editors.

I used copy/paste for the text that disappeared (like "président du conseil d'administration"), so it may have been caused by T154123.

The_RedBurn changed the task status from Stalled to Open.Aug 31 2017, 11:18 AM

Reproduced yesterday:

T159224.png (1×1 px, 378 KB)

https://fr.wikipedia.org/w/index.php?title=Trait%C3%A9_de_Lisbonne&diff=prev&oldid=140190630

Tried T173077#3526570 but it didn't work, and I didn't click twice on either hyperlink nor cite button. So it doesn't seem to be linked to T173077.

This time too, I used copy/paste for the text (and ref) that was lost.

Deskana subscribed.

Data loss bugs are bad, but we don't know how to reproduce this. :-(

Deskana changed the task status from Open to Stalled.Oct 11 2017, 12:35 PM
Deskana triaged this task as Medium priority.

Unfortunately closing this Phabricator task as no further information has been provided how to potentially reproduce this. If this still happens and there is more information how to reproduce, please set the status of this task back to "Open" via the Add Action...Change Status dropdown. Thanks!