With the release of Drupal, an important rendering behavior has changed for block content render arrays. If your custom modules or themes rely on #attributes in block render arrays, this update may affect your frontend output.

The change was introduced in the Drupal core issue:

“Attributes of a block content are applied to block itself” (#2486267)

This article explains what changed, why it matters, and how to update your code correctly.

Drupal Core Adopts the main Branch: A Technical Deep Dive into the New Workflow

In January 2026, the Drupal project officially announced that the main branch is now the primary development branch for Drupal core. This change completes a series of infrastructure updates that began back in 2023 and brings Drupal’s development workflow in line with modern Git best practices used across the open-source ecosystem.

This article explains: