move-lines: Undoing after moving a line up or down brings the window view to the EOF
This happens for both single and multiple lines. Even if line being moved is line 1, undoing the operation will still force the view to the end of a document.
It's easy to reproduce:
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Go to any line.
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Press Alt + ↑ or Alt + ↓.
The line is displaced properly.
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Now undo this operation.
The window view is forced to EOF.