Here's an example:
https://woocommerce.github.io/code-reference/classes/WC-Data.html#property_meta_data
I did a bit of digging, and here are some lines you can see in the HTML files:
It seems like something is interpreting "false" as "\false" and is interpreting "null" as "\null".
https://www.php.net/manual/en/regexp.reference.escape.php
Here's an example:
https://woocommerce.github.io/code-reference/classes/WC-Data.html#property_meta_data
I did a bit of digging, and here are some lines you can see in the HTML files:
It seems like something is interpreting
"false"as"\false"and is interpreting"null"as"\null".https://www.php.net/manual/en/regexp.reference.escape.php