As I posted below, '||' will not return the (true) left-hand-side in list context; you can use:
my @t; my @list = (@t = $c->bbox()) ? @t : (1, 2, 3);

[download]
and it'll work.

In reply to Re^3: 'or' versus '||' - Unexpected Results by massa
in thread 'or' versus '||' - Unexpected Results by cmv

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