### Summary A merge request is closed (due to inactivity or whatever). New code is then pushed and the MR reopened. There is no comment with the "changes since the last update" link. ### Steps to reproduce - Open a merge request - Close the merge request - Push code to the source branch - Reopen the merge request ### Example Project So I realized after making this, I had opened it on here. See gitlab-ce!16657. ### What is the current *bug* behavior? No comment about the changes since the last push. ### What is the expected *correct* behavior? A comment with the changes since the MR was last open.