Not able to add all the created users in Run As privileges under Roles.

[sukhwindersingh-qasource]

Describe the bug:
Not able to add all the created users in Run As privileges under Roles.

Build Details:

VERSION : 8.5.0
BUILD: 55998
COMMIT:  01ecbd48f3657327cb5375b54195cd07bfc4027f

Preconditions

1. Kibana should be running.
2. Create users with same username but different case i.e - Usernames : Sukha , SukhA

Steps to Reproduce

1. Navigate to Management in kibana.
2. Click on Stack management.
3. Click on roles and then Click on create roles.
4. Now add users in Run As privileges.

Actual Result
User is not able to add the users with same usernames but different case.

Expected Result
User should be able to add the users with same usernames but different case.

Screen-Recording:

Users.-.Elastic.Mozilla.Firefox.2022-09-07.11-51-11.mp4

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[sukhwindersingh-qasource]

@karanbirsingh-qasource please review this bug.

[elasticmachine]

Pinging @elastic/kibana-app-services (Team:AppServicesSv)

[elasticmachine]

Pinging @elastic/kibana-security (Team:Security)

[azasypkin]

Thanks for reporting @sukhwindersingh-qasource !

It looks like it's a known old bug in EuiComboBox we use to render list of the users: elastic/eui#1997. And it should affect all EuiComboBox'es and EuiSelectable's in Kibana. Let me check with the EUI team if there are plans to fix (implement case-insensitivity support) that.

[azasypkin]

I'm closing this issue in favor of elastic/eui#1997 as it's a broader issue that affects entire Kibana.

Having said that, EUI team isn't planning to fix this in the near term since it's quite an edge case (the issue is open since 2019, but they didn't have enough complaints to prioritize it so far). We can continue discussion on the EUI issue if we think it should get more attention.