Registering a block style breaks the editor

When registering any block style for this block, the editor breaks because the automatically-applied style class is merged with the block class.

Style registration example:

register_block_style(
	'jetpack/layout-grid',
	array(
		'name' => 'mobile-reversed',
		'label' => 'Reversed column order on mobile'
	)
);

Once you choose a block style in the editor, the block formatting breaks, and choosing the default style does not fix the issue because an “is-default-style” class is added. In the case of the above custom style, the classname on the block becomes:

wp-block-jetpack-layout-gridis-style-mobile-reversed

And when choosing the default style:

wp-block-jetpack-layout-gridis-style-default