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Section editing has edit rebase errors all day long
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Description

Twice in a row, my edits to an active page have been rebased incorrectly, so that "show changes" would have me throw away more recent edits than mine. I am using section editing, source mode.

Event Timeline

awight raised the priority of this task from to Needs Triage.
awight updated the task description. (Show Details)
awight added a project: MediaWiki-General.
awight subscribed.

steps to reproduce:

  • Open "edit source" for a section.
  • Make some changes.
  • Meanwhile, a second editor also edits and saves the article. Unknown if this is section or full-page editing.
  • First editor clicks "show changes."

The rendered diff will include the inverse of the second editor's changes, which is incorrect. The first editor's change should have been transparently rebased onto the latest revision.

Have you tried to save the page? Was the conflict resolved correctly? If this was just the "Preview changes" diff, this is a duplicate of T121185.

@awight: Could you please answer the last comment?

@matmarex
Thank you for pointing out the older bug--no, I didn't try saving the page until I had resolved the apparent conflicts.