diff -u b/core/profiles/demo_umami/config/install/field.field.block_content.banner_block.field_banner_image.yml b/core/profiles/demo_umami/config/install/field.field.block_content.banner_block.field_banner_image.yml
--- b/core/profiles/demo_umami/config/install/field.field.block_content.banner_block.field_banner_image.yml
+++ b/core/profiles/demo_umami/config/install/field.field.block_content.banner_block.field_banner_image.yml
@@ -23,7 +23,7 @@
   max_resolution: ''
   min_resolution: ''
   alt_field: true
-  alt_field_required: true
+  alt_field_required: false
   title_field: false
   title_field_required: false
   default_image: