Html parser's find_all does not work well with <input> elements

Bug #1681015 reported by Matt C
This bug report is a duplicate of:  Bug #1676935: Reading <br> tags differs per parser. Edit Remove
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Beautiful Soup

Bug Description

I have Python 2.7.3 and bs.version is 4.4.1

For some reason this code

from bs4 import BeautifulSoup # parsing

html = """
<head id="Head1"><title>Title</title></head>
    <form id="form" action="login.php" method="post">
        <input type="text" name="fname">
        <input type="text" name="email" >
        <input type="button" name="Submit" value="submit">


html_proc = BeautifulSoup(html, 'html.parser')

for form in html_proc.find_all('form'):
    for input in form.find_all('input'):
        print "input:" + str(input)

returns a wrong list of inputs:

input:<input name="fname" type="text">
<input name="email" type="text">
<input name="Submit" type="button" value="submit">
input:<input name="email" type="text">
<input name="Submit" type="button" value="submit">
input:<input name="Submit" type="button" value="submit">

It's supposed to return

input: <input name="fname" type="text">
input: <input type="text" name="email">
input: <input type="button" name="Submit" value="submit">

What happened?

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