Tilted quotation marks produce non capitalization

[franciscoqv]

Example:

String title = 'ABC “ABC ABC”';
String newTitle = new ReCase(title).titleCase;

Expected newTitle:
'Abc “Abc Abc”';
However, this is returned (notice the diference between the second ABC):
'Abc “abc Abc”';

Hypothesis: I think that the expected result is not reached because the “ character is --for some reason-- considered to be part of the word. Something like that?

Thanks.