admin-ajax.php?action=get_filter_posts&params[term]=all stopped working

Hello,

We use a query to admin-ajax.php outside of WordPress to show posts in our app using these parameters :

action=get_filter_posts
nonce=103192134c
params[page]=1
params[tax]=category
params[post-type]=post
params[term]=all
params[per-page]=4
params[filter-id]=762474
params[caf-post-layout]=post-layout1
params[data-target-div]=.data-target-div1

But since a recent update, the params[term]=all stopped working. It is now returning an empty list whereas replacing all with a list of ids work.

Is there a way to get these posts without having to pass all categories ids ?