Ticket #5465: 5465.patch

_source/plugins/enterkey/plugin.js

@@ -100 +100 @@
                                         // Do not enter this block if it's a header tag, or we are in
                                         // a Shift+Enter (#77). Create a new block element instead
                                         // (later in the code).
-                                        if ( !forceMode && !headerTagRegex.test( previousBlock.getName() ) )
+                                        if ( previousBlock.is( 'li' ) ||
+                                                 !( forceMode || headerTagRegex.test( previousBlock.getName() ) ) )
                                         {
                                                 // Otherwise, duplicate the previous block.
                                                 newBlock = previousBlock.clone();