Checkbox Conditional Field Not Working

I’ve got the following code. The conditional setting is “IF project-other = Other SHOW project-other-conditional” Checking the “Other” box does not reveal the conditional group. There are no duplicate fields in the form.

[checkbox* project-type id:project-type class:project-type
use_label_element "Existing website redesign" "E-commerce"
"Mobile-friendly redesign" "Online marketing / SEO" "Website
maintenance" "Web or mail hosting" "Logo design or branding" "Print
design (brochures, magazines, posters, etc.)" "Other"]
<br>
(Check all that apply)
[group project-other-conditional clear_on_hide]
<span>If you checked &ldquo;Other&rdquo;, please clarify:&nbsp;<span
    aria-hidden="true" role="presentation"
    class="u-required">*</span><span class="hide">
    (Required)</span></span>
<br>
[textarea* project-other id:project-other class:project-other]
[/group]

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