Blog Posts Block: Cropped Featured Images in post grid not working well in the Editor

[filipanoscampos]

The bug
On WordPress.com Atomic, when a Blog Posts block is added to the Editor and set as a Grid, and the Featured Images are set to be cropped, the changes are visible on the live site. Still, in the Editor, the Post Featured Images only reflect the crop settings for the first few posts. After around 12 posts, the settings no longer apply.
The issue isn't impactful as things work as expected on the live site.

To Reproduce
Steps to reproduce the behavior:

1. On a WordPress.com Atomic site with more than 12 published posts, add a Blog Posts block to a page
2. Make sure to set it to display posts in a grid and crop images to a square, for example.
3. Notice that, in the Editor, the settings only apply to the first 10-12 posts.

Screenshots

Expected behavior
The setting should apply to all featured images of the posts instead.