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spurious changes
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Description

Author: eli.osherovich

Description:
Hello,

Recently I received a mail from somebody who asked why I removed a reference to his book from a Wikimedia page. The problem is that I didn't.

I indeed made a small correction to the Wikimedia page, however, I was not related to his book. After his email I returned to the page and checked its history. For some reason, according to the history, the version after my correction contains a number of spurious changes, including the removing of the book. I definitely did not made these changes. Moreover, if I "undo" my revisions the page does not return to its previous stage: these spurious changes are still there.

Following is the link to page differences after I undid my revisions.

http://en.wikipedia.org/w/index.php?title=Tomographic_reconstruction&action=historysubmit&diff=467150811&oldid=464272632

P.S.
I set the severity to blocker because, in my view, all editing must be blocked before the issue is resolved. The situation when some changes are done in such a "mysterious" way is unacceptable.


Version: unspecified
Severity: blocker

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Event Timeline

bzimport raised the priority of this task from to High.Nov 22 2014, 12:04 AM
bzimport set Reference to bz33317.
bzimport added a subscriber: Unknown Object (MLST).

You had made more than one edit in the page. If you are watching the diff of multiple edits it says: (One intermediate revision by one user not shown). If you click undo, it will only undo the latest version, not the diff what you see.

eli.osherovich wrote:

Yes, I made 2 changes:

13:39, 20 December 2011
13:40, 20 December 2011

That were undone (see the link in the original bug report). I really expect that after undoing the change the page will return to its original stage. I did hot happen because the page was altered by something/someone else and these changes do not appear on the history.

In the first edit (13:39, 20 December 2011) I removed one line ONLY one line (a link to bronnikov-alrorithms.com. However, if you compare it to the previous version (22:54, 5 December 2011‎ Holdendp) you will see that there were more changes than this. These spurious changes remain even after I have undone my corrections.

P.S.
After filling this bug report I again attempted to edit the page, so please ignore the changes done after (09:02, 22 December 2011‎ Eli)

eli.osherovich wrote:

Sorry, my previous post contains too many typos. Please discard it. Following is a corrected version.

In my attempt to edit the page, I actually made two corrections:

13:39, 20 December 2011
13:40, 20 December 2011

that were undone afterwards:

09:01, 22 December 2011‎ (Undid revision 466847261)
09:02, 22 December 2011‎ (Undid revision 467150799)

Please see the link in the original bug report.

I really expect that after undoing the change the page will return to its original state. However, it did hot happen because the page was altered by something/someone else and these changes did not appear on the "undo" list.

In the first edit (13:39, 20 December 2011) I removed one line ONLY: a
link to bronnikov-alrorithms.com. However, if you compare it to the previous
version (22:54, 5 December 2011‎ Holdendp) you will see that there were more
changes than this. These spurious changes remain even after I have undone my
corrections.

P.S.
After filling this bug report I attempted to edit the page again, so please
ignore the changes done after (09:02, 22 December 2011‎ Eli)

marking high and tagging so that we can have platform eng discover the source of the problem

This is weird. I can't find any deleted edits (rev_deleted != 0 or archive table) for this page.

(In reply to comment #3)

In the first edit (13:39, 20 December 2011) I removed one line ONLY: a
link to bronnikov-alrorithms.com. However, if you compare it to the previous
version (22:54, 5 December 2011‎ Holdendp) you will see that there were more
changes than this. These spurious changes remain even after I have undone my
corrections.

In your first edit I think you edited an old revision by mistake. Here is a diff were only the link was removed: http://en.wikipedia.org/w/index.php?title=Tomographic_reconstruction&action=historysubmit&diff=466847194&oldid=273185931

Then you made another correction. And when you tried undoing your changes, you only undid the last correction.