Index: src/wp-content/themes/twentytwenty/style-rtl.css
===================================================================
--- src/wp-content/themes/twentytwenty/style-rtl.css	(revision 47286)
+++ src/wp-content/themes/twentytwenty/style-rtl.css	(working copy)
@@ -5810,6 +5810,10 @@
 	.wp-block-image .alignright {
 		margin-left: 0;
 	}
+  
+    .wp-block-image .aligncenter figcaption {
+        text-align: center;
+    }
 
 	/* BLOCK: SEPARATOR */
 
Index: src/wp-content/themes/twentytwenty/style.css
===================================================================
--- src/wp-content/themes/twentytwenty/style.css	(revision 47286)
+++ src/wp-content/themes/twentytwenty/style.css	(working copy)
@@ -5880,6 +5880,10 @@
 		/*rtl:ignore*/
 		margin-left: 0;
 	}
+  
+    .wp-block-image .aligncenter figcaption {
+        text-align: center;
+    }
 
 	/* BLOCK: SEPARATOR */