Cannot type " " in eval-expression's prompt when using edebug

# Steps to reproduce:
1. `(add-hook 'eval-expression-minibuffer-setup-hook 'lispy-mode)` to enable `lispy-mode` in `M-:`
2. Activate `edebug` somewhere
3. Press `e` (`edebug-eval-expression`)
4. Type " "

# Expected
" " is typed

# Result
Message: `Edebug will stop at next stop point.`. Nothing is typed in the prompt.