Created attachment 11763
Screenshot showing out of order edits

I've taken a screenshot of [[d:Special:Contributions/Legobot]] showing the out of order edits since using ?offset doesn't work and the bot will continue to edit, likely pushing those specific ones off the page.

Attached:

Sending this one upstream, as it is a core issue. It just appears more often on Wikidata due to the higher edit frequency.

If core disagrees, send the bug back :)

See also the edits to [[species:User talk:Brion VIBBER]] here:
https://species.wikimedia.org/wiki/Special:Contributions/EdwardsBot

The top two edits to Brion's talkpage were both made on 2013-05-03T17:10:33Z. However, the (current) or (top) switches between the two. This means that clicking on the "current" edit sometimes gives you an older one (with a lower oldid, for the record).

Permanent link:

https://species.wikimedia.org/w/index.php?title=Special:Contributions&offset=20130503171036&limit=2&tagfilter=&contribs=user&target=EdwardsBot

If you load this, it may show either the first or the second edit as current.

• Bug 48880 has been marked as a duplicate of this bug. ***

The api query does not have this problem, but also only sorts by timestamp:

http://www.wikidata.org/w/api.php?action=query&list=usercontribs&ucuser=Legobot&ucstart=20130210091113&uclimit=2

Change 247313 had a related patch set uploaded (by Florianschmidtwelzow):
Remove scary sorting from ContribsPager if there multiple timestamps with same ID

https://gerrit.wikimedia.org/r/247313

I've also been seeing this problem on Wikidata. Here's a screenshot of the issue, as an additional data point:

(note the entries for the RCML item, with the (current) marker appearing in the bottom one.)

This is still happening on Wikidata, recent example discussed here. @Lydia_Pintscher could we look at it again?

My understanding is that this is a general MediaWiki problem and we're only seeing it more on Wikidata because of the high edit frequency. Is that correct?

Change 247313 abandoned by Matěj Suchánek:
Order rows with rev_id as a secondary criteria in ContribsPager

Reason:
Things have changed. If still needed, must be redone.

https://gerrit.wikimedia.org/r/c/mediawiki/core/ /247313

In T46841#6102274, @Lydia_Pintscher wrote:

My understanding is that this is a general MediaWiki problem and we're only seeing it more on Wikidata because of the high edit frequency. Is that correct?

I think so. I assume this is the same as T48508: Non-unique value is used for paging on some pages and T114756: Special:Contributions should sort by rev_id if two revisions have the same rev_timestamp.