How to set FMX TStringGrid Column Sizes?

[Incus J 10]

I have a two column TStringGrid on my main form.  I set the column widths in the form designer at design time.  I think this used to work, but at runtime most designer column widths are now ignored - all columns default to the width of the first column.

 

Is it possible to get the app to apply the other column widths set at design time?  I can set a column width in code :

MyGrid.Columns[1].Width:=200;

but that involves a bit of trial and error, so I'd prefer to set it visually.

 

Incidentally while playing around with this, I found :

MyGrid.Columns[1].Align:=TAlignLayout.Client;

autosizes the last column to fill remaining space, which is useful.  However this TStringColumn Align property does not appear in the Object Inspector - it is not a Published property, so this can only be set in code.