Form is not sending text if Quill is not clicked out of before submit

My ruby code consists of the following:
<%= form_for :reply, url: comment_path(post_id: @post.id) do |f| %> <%= f.hidden_field :reply_to, value: comment.id.to_s %> <%= f.text_field :body, autofocus: true, class: 'quill_container' %> <%= f.submit "Post" %> <% end %>

First of all, the autofocus doesn't work, although that's a minor issue.
The bigger issue is that the text is not sent sometimes. Specifically, if I type something in and press "Post" without clicking out of the text box first, it doesn't send it. If I type something long, it will send the first part of what I type. However, if I click out of the text box and then click Post, it works every time.
Is this a known issue, or am I doing something wrong?