Sorry, I forgot to mention that set_heights, apart from initialization stage, is called passing a list of key/value pairs.
So
if (@_ && ref $_[0] ne 'ARRAY') {
is now fixing the code. Thanks a lot for your time and help.

In reply to Re^3: Class::Struct accessor function after Perl V5.16 by Anonymous Monk
in thread Class::Struct accessor function after Perl V5.16 by Anonymous Monk

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