Use of the char counter with input prefix

[itumoraes]

This bug exists when I try to use the char counter with input prefix.

Error:

<label class="ls-label col-md-4">
    <div class="ls-prefix-group">
        <input type="text" data-ls-module="charCounter" maxlength="50">
        <span class="ls-label-text-prefix ls-ico-user"></span>
    </div>
</label>