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History merge does not update diff bytes
Open, Needs TriagePublic

Description

How to reproduce

  1. Go to Special:MergeHistory and merge two pages of your choosing.

Expected result

The byte difference on the page history is correct for every edit.

Actual result

The byte difference on the page history is incorrect for the edit that comes right after a merged-in edit. The diff remains the same as it was pre-merge. It has not been adjusted for its new neighboring merged-in edit.

Event Timeline

Heddy10 created this task.Aug 9 2019, 2:49 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptAug 9 2019, 2:49 AM

Also see T38976 which might be the same issue?

T65078 might also be the same issue.