Changes

node_modules/mongoose/lib/schema/string.js

@@ -516,6 +516,10 @@ SchemaString.prototype.match = function match(regExp, message) {
       return false;
     }
 
+    // In case RegExp happens to have `/g` flag set, we need to reset the
+    // `lastIndex`, otherwise `match` will intermittently fail.
+    regExp.lastIndex = 0;
+
     const ret = ((v != null && v !== '')
       ? regExp.test(v)
       : true);