Search doesn`t work

Thanks for project.
I found it very useful, but have a problem with search option.

I've enabled search option, installed reds, but search isn`t working. I`m trying to search using API and web UI.
I found that whatever search keys I`m adding to job, in redis it still using same index "UNTFN".
And if I will try to search directly with this index string "UNTFN", it will find all jobs, but it doesn`t find with search keys.
How could it be fixed?

Start by reproducing the search through both the API and web UI with search enabled, then inspect the Redis index used for jobs. Compare searches using different keys with the observed "UNTFN" index behavior; done means distinct search keys return the expected jobs in both entry points.

Written by the indexing model from the issue text.