Same situation in Excel 2007, but in both versions there's a workaround. If
the merged cells are A1:D1, for example, use a remote cell, say Z1, which is
as WIDE as columns A:D, and contains =A1. Both are marked as wrap text. When
you double-click the row separator between rows 1 & 2, it actually uses Z1
to determine the height, and it looks like A1:D1 works!
> Whereas:
>
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>
> ***