Гугл написал. Что сделано?
Получил письмо от Гугла:

Пришлось немного переделать шаблон design\themes\responsive\templates\common\breadcrumbs.tpl
Было:
<div itemscope="" itemtype="http://schema.org/BreadcrumbList" id="breadcrumbs" id="breadcrumbs_{$block.block_id}">
{if $breadcrumbs && $breadcrumbs|@sizeof > 1}
<div class="ty-breadcrumbs clearfix">
{strip}
$level = 1
{foreach from=$breadcrumbs item="bc" name="bcn" key="key"}
{if $key != "0"}
<span class="ty-breadcrumbs__slash">/{$key}•{$level}/</span>
{/if}
{if $bc.link}
<span itemscope="" itemprop="itemListElement" itemtype="http://schema.org/ListItem"><a rel="nofollow" itemprop="item" href="{$bc.link|fn_url}" class="ty-breadcrumbs__a{if $additional_class} {$additional_class}{/if}"{if $bc.nofollow} rel="nofollow"{/if}><span itemprop="name">{$bc.title|strip_tags|escape:"html" nofilter}</span></a></span>
{else}
<span class="ty-breadcrumbs__current"><bdi>{$bc.title|strip_tags|escape:"html" nofilter}</bdi></span>
{/if}
$level++
{/foreach}
{include file="common/view_tools.tpl"}
{/strip}
</div>
{/if}
<!--breadcrumbs_{$block.block_id}--></div>
стало:
<div id="breadcrumbs">
{if $breadcrumbs && $breadcrumbs|@sizeof > 1}
<div class="ty-breadcrumbs clearfix">
{strip}
<ol itemscope="" itemtype="http://schema.org/BreadcrumbList">
{foreach from=$breadcrumbs item="bc" name="bcn" key="key"}
{if $key != "0"}
<span class="ty-breadcrumbs__slash">></span>
{/if}
{if $bc.link}
<li itemscope itemprop="itemListElement" itemtype="http://schema.org/ListItem"><a rel="nofollow" itemscope itemtype="https://schema.org/WebPage" itemprop="item" itemid="{$bc.link|fn_url}" href="{$bc.link|fn_url}" class="ty-breadcrumbs__a{if $additional_class} {$additional_class}{/if}"{if $bc.nofollow} rel="nofollow"{/if}><span itemprop="name">{$bc.title|strip_tags|escape:"html" nofilter}</span></a>
<meta itemprop="position" content="{$key}" />
</li>
{else}
<li itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"> <span itemprop="name" class="ty-breadcrumbs__current"><bdi>{$bc.title|strip_tags|escape:"html" nofilter}</bdi></span><meta itemprop="position" content="{$key}" /></li>
{/if}
{/foreach}
</ol>
{include file="common/view_tools.tpl"}
{/strip}
</div>
{/if}
<!--breadcrumbs_{$block.block_id}-->
</div>
Пришлось добавить и стили (тут для витрины sww.com.ru):
/* новый стиль для новых breadcrumbs 20/05/2020 */
.ty-breadcrumbs li {
display: inline;
}
.ty-breadcrumbs ol {
padding: 0;
margin-top: 24px;
}
.ty-breadcrumbs {
padding: 0;
margin-top: -20px;
}