[perl #112470] STD does not accept ${a} but rakudo does

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# New Ticket Created by  Paweł Pabian 
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14:26 bbkr: std: my ${a} = 5;
14:26 p6eval: std 3d13d53: OUTPUT«===SORRY!===␤Unsupported 
use of ${a}; in Perl 6 please use $a at /tmp/WsfqeL0gUw line 1:␤------> my 
${a}⏏ = 5;␤Parse failed␤FAILED 00:00 40m␤»

14:26 bbkr: rakudo: my ${a} = 5;
14:26 p6eval: rakudo 442db9:  ( no output )
14:26 bbkr: hm, it did _something_ :)