Form Submit button only works after reload

If it's Rails 4, it's probably because of Turbolinks. Try putting

data-no-turbolink="true" inside your body tag

This may work, it happend once to me.

I believe this is an HTML issue, not a Rails issue. Per this discussion Form inside a table, <form> can not be placed inside <table> or <tbody> or <tr>. After moving the <form> to wrap the table and putting the controls inside the respective <td> the form works.

I still don't understand why refreshing the page made the form work, but...