Magento2: 3columns Layout renders 2columns-right
المحلول
Are you just doing content? Ultimo uses the Bootstrap Grid. You can create any columns you want for the home page. It is under 6.4 on the user manual.
<div class="col-sm-4">
</div>
<div class="col-sm-4">
</div>
<div class="col-sm-4">
</div>
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