Addition to the early pull #6438 (#6441)

* Update EditAction.java

Fix the bug #6421

* Update CHANGELOG.md

* Update EditAction.java

src/main/java/org/jabref/gui/edit/EditAction.java

@@ -50,6 +50,7 @@ public void execute() {
                     case DELETE_ENTRY:
                         // DELETE_ENTRY in text field should do forward delete
                         textInput.deleteNextChar();
+                        break;
                     default:
                         throw new IllegalStateException("Only cut/copy/paste supported in TextInputControl but got " + action);
                 }