autocomplete=off is not present in the password field or at the form level in the login page source code:

---------------
<form class="form-horizontal" role="form" action="j_security_check?locale=en_US" method="POST">
                    <div class="form-group">
                        <label for="j_username" class="col-sm-2 col-md-2 control-label">Username</label>
                        <div class="col-sm-10 col-md-10">
                            <input type="text" class="form-control" value="" name="j_username" id="j_username" placeholder="" tabindex="1" autofocus />
                        </div>
                    </div>
                    <div class="form-group">
                        <label for="j_password" class="col-sm-2 col-md-2 control-label">Password</label>
                        <div class="col-sm-10 col-md-10">
                            <input type="password" class="form-control" id="j_password" name="j_password" placeholder="" tabindex="2">
                        </div>
                    </div>
                    <div class="form-group">
                        <div class="col-xs-offset-8 col-xs-4 col-sm-offset-8 col-sm-4 col-md-offset-8 col-md-4 submit">
                            <button type="submit" class="btn btn-primary btn-lg" tabindex="3">Sign In</button>
                        </div>
                    </div>
                </form>
--------------

Solution:

Disable autocomplete for all sensitive fields like: 

<input type="password" autocomplete="off" name="pw">

If there are many fields, it may be faster to set the "autocomplete" attribute to "off" in the outer <form> tag. For
example:

<form action="/login.jsp" autocomplete="off" name="pw">
<input type="password" name="pw">
</form>