This shows you, how to get the bug, and the error message
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Mock Description
Event Timeline
Luke081515 created contentmodelchange: bug after a change.Jul 17 2015, 10:33 PM2015-07-17 22:33:15 (UTC+0)
Luke081515 added a task: T106195: MediaWiki gives error, when press undo after a contentmodelchange.
Luke081515 mentioned this in T106195: MediaWiki gives error, when press undo after a contentmodelchange.
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