Issue #3206952: Why block_content depends on block?

core/modules/block_content/tests/src/Functional/Rest/BlockContentResourceTestBase.php

@@ -15,7 +15,7 @@ abstract class BlockContentResourceTestBase extends EntityResourceTestBase {
   /**
    * {@inheritdoc}
    */
-  protected static $modules = ['block_content'];
+  protected static $modules = ['block', 'block_content'];
 
   /**
    * {@inheritdoc}