[perl #76038] No accessor generation for class attributes

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# New Ticket Created by  Lewis Wall 
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$ perl6 -e 'class A {our $.x = 4}; say A.new.x'
Method 'x' not found for invocant of class 'A'
  in main program body at line 1

Using 'my' also does not work.
According to S12, this should automatically make a public accessor for x.