"Tab could not be found by model"

[jakeleboeuf]

I am running into a "Tab could not be found by model" error every few page loads. It doesn't happen all the time, but I can't seem to track down the cause. Only seeing the issue when running my app with Fastboot.

    {{#ivy-tabs selection=selection as |tabs|}}
      {{#tabs.tablist as |tablist|}}

        {{#tablist.tab "about" on-select=(action (mut selection))}}
          <h3>About</h3>
        {{/tablist.tab}}
        {{#tablist.tab "size" on-select=(action (mut selection))}}
          {{#if model.sizeInfo}}<h3>Size Info</h3>{{/if}}
        {{/tablist.tab}}
        {{#tablist.tab "shipping" on-select=(action (mut selection))}}
          {{#if model.shippingInfo}}<h3>Shipping &amp; Payment Info</h3>{{/if}}
        {{/tablist.tab}}
      {{/tabs.tablist}}


      {{#tabs.tabpanel "about"}}
        <p class="campaign-details--c">{{data.campaign_details__c}}</p>
      {{/tabs.tabpanel}}

      {{#tabs.tabpanel "size"}}
          <p class="campaign-details--c">{{ model.sizeInfo }}</p>
      {{/tabs.tabpanel}}

      {{#tabs.tabpanel "shipping"}}
          <p class="campaign-details--c">{{ model.shippingInfo }}</p>
      {{/tabs.tabpanel}}

    {{/ivy-tabs}}

[jakeleboeuf]

Could something similar to this be going on?