In case using customize toolbar with flat, compact, classic under Grid toolbar control, can't change to any type other than the current grid type.
Only when select grid type from Layout menu, then changing grid type in Grid toolbar will work.
See demo here.
Thanks
Maya
Hello Maya,
Thank you for your question. We have updated your custom toolbar with the latest version. You are welcome to check it again. Please don't forget to clean the cache.
Best regards,
Dmytro.