Ticket #49613: 49613.diff

src/wp-content/themes/twentynineteen/style-editor.css

@@ -598 +598 @@
 }
 
 .wp-block .wp-block {
-  width: 100%;
+  width: initial;
 }
 
 /** === Base Typography === */

src/wp-content/themes/twentynineteen/style-editor.scss

@@ -62 +62 @@
 
         // Only the top level blocks need specific widths, therefore override for every nested block.
         .wp-block {
-                width: 100%;
+                width: initial;
         }
 }