In jshell-11, why does a redeclared reference variable that resets to null still have a type?

Question

When redeclaring Integer \'a\' in line 33, why does jshell show the reference variable as an instance of Integer (refer to lines 38 & 39)? After the redeclaration, line 34 s

Answer 1

I've raised it as a bug and it's been accepted.

https://bugs.openjdk.java.net/browse/JDK-8211694

Good spot.