Hi,
There does not seem to be any difference in behavior between “auto” and false values.
I think i figured it out!
<?php
$template = [
[ 'core/paragraph', [ 'placeholder' => 'Summary' ] ],
];
?>
<InnerBlocks template="<?php echo esc_attr(wp_json_encode($template)); ?>" templateLock="all" />
This is very interesting. Do you know if it would be possible to limit allowed paragraphs inside innerblock to 1?