Bad behavior in nested cases

[cstrahan]

Here's an example:

case blah of
    Baz ->
        case blub of
            Floof -> ...
    Bloop{- Typing the following space here causes the line to be indented...-} -> ...
         {- like so:
            Bloop  -}

Merely typing a space character causes Bloop to lurch forward to align with Floof.