[perl #128915] [BUG] multi-dim Hash turnes items into List

[via RT]

# New Ticket Created by  Wenzel Peppmeyer 
# Please include the string:  [perl #128915]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=128915 >


my %multi-dim;
%multi-dim{1;2;3} = 42;
dd %multi-dim{1;2;3}
# OUTPUT«(42,)␤»

# expected:
OUTPUT«42␤»