cell wordwrap always on

[AlexanderBB]

This is a bit weird. Inside a With-End With block I'm populating a cell

.Cells(theLine, Dat) = v

It's inside a For-Next loop where DAT changes to the appropriate column.
So all goes well until it gets to Col "R". Then it expands cell height to about 5 lines worth. Format Cells-Alignment and untick Wrap Text will correct this - but why does it do it?
I have set properties for Col "R" so Wrap text is Off, and other columns are nor doing this - only "R".
Is it perhaps the amount of text, the presence of linefeed, or something in the text turning it on ?

 

[GWteB]

The precence of a linefeed (vbLf) is most likely ....