I just noticed that the keyword search option is not working anymore in 4.0.4. for a detailed search component. Could someone please verify if this is a known issue? Kindly let me know.
I tested in latest environment (220.127.116.11 production environment) and i did not reproduce the issue which you have mentioned.
Can you let us know on which field you executed search and also what is the search criteria (i.e., Equals, not Equals etc.,)
Thanks & Regards,