Very much doubt it, it certainly used to (4 years ago). The old system truncated your password (you used 20 chars, it dropped the last 14) so when the switch happened - suddenly your password didn't work - it was very obvious (unless you used <=6 char passwords).

The communication about the change, and the way the old system worked (without warning nor notification) left a lot to be desired.

When you create an application to open an account it still requires you to create a fixed-length short password that you are then supposed to change or something. It was around half a year ago when I encountered this.