Ticket #42210: code-editor-help.42210.diff

src/wp-admin/css/code-editor.css

@@ -2 +2 @@
 .wp-core-ui [class*="CodeMirror-lint-message"],
 .wrap .CodeMirror-lint-marker-multiple {
         background-image: none;
+}
+
+.wrap .CodeMirror-link-marker-error{
         cursor: help;
 }