Fm 11 UI bug: tags in the Paragraph Designer don't scroll

Here's another Fm 11 UI bug:

1. Create a new blank file: File > New Portrait.
2. Open the Paragraph Designer and click in the Paragraph Tag box.
3. Scroll through the list of paratags using the ARROW DOWN key.
4. Create a new paratag named "body" (lowercase b).
5. Try step 3 again: doesn't work (Fm toggles between "Body" and "body").

Cheers

Yves