Hello,
Thank you so much for the report. We will fix this in the next update.
At this moment you can leave empty “Enable swatch” checkbox and fill only image or color field for attribute term
In case it wont help try to add a space between CSS classes by your own in the file basel/woocommerce/single-product/add-to-cart/variable-swatches.php
Find this line
$class .= 'text-only';
And replace with this
$class .= ' text-only';
Kind regards
Xtemos