User picker (Single select) custom field doesn't display and users to select from the dropdown menu

[Mirjana Davcheva]

We have created custom fields: Feature Owner and Reviewer. 
Added them to the screen, they appear in the project's issues, but when I click to select a user from the user picker, the dropdown menu is empty. 

[Anthony Engel · Accepted solution]

Thanks, All. 

Here is a screenshot to the above fix:

[byungwoo]

Thanks to your comment, I was able to resolve it as well.

[Kristaps Vilcāns · Accepted solution]

Solution:
Go to project settings -> Customer permissions -> "Who can customers share requests with?"... Check "Any customer or organization, by searching in this project".

Save.

Then refresh and users can type something and find other users.

[Rohan Fernandes · Accepted solution]

Under your project settings do the below

1. Go to "Customer Permissions"

2. under the "Customer sharing" select "Customers can search for other customers within their project or organizations"

This will display the list and you do not have to search.

It worked for me. Hope it help's you :)

[Mirjana Davcheva · Accepted solution]

We have found out that we needed to start typing the user's name so it will appear in the dropdown menu, even though when you click on the dropdown menu it says no results. 

You have to start typing the name of the user. 
At least that worked for us. 

[Mirjana Davcheva]

[Support - Leoj Studio]

I think the problem might be in your workflow

Default issue types have a default workflow which is automatically created

but

Custom issue types must have their own workflow,

Once that is created, I think it will automatically show results

[Juli Talvensaari]

I had a similar issue where a single user-picker custom field suddenly stopped finding any users: issues that already had a user listed retained that user, but a new one could not be assigned - it could only be changed to None.

I resolved this by enabling a user filter for this field. For some reason, this fixed it, even after I disabled the filter again.

[fahimhs]

"I resolved this by enabling a user filter for this field."

- Hello I am kind of new at Jira. How did you enable the user filter for custom fields?

[Piotr Kostecki]

Go to Settings > Issues > Custom Fields and search for your field.

Then click on the 3 dots menu to the right and select Context and default values.

At the bottom under User Filtering, edit the filtering to use the jira-software-users group. 

Available only with jira-administrators permissions.

[Owen Guion]

I tried this solution without success.

[Barbara Bermingham]

I too have tried this without success. Has anyone else got a solution to this problem?

[A.J. Apple]

My users can't even start typing a name to enter someone into a custom user picker field. I have also confirmed they have the global permission for browsing users. Anyone else had this issue?

[Support - Leoj Studio]

Can you share a screen shot