[Security Solution] [Bug] User is able to hide all the columns which shows empty UI for the Cases

[muskangulati-qasource]

Describe the Bug
User is able to hide all the columns which shows empty UI for the Cases

Kibana/Elasticsearch Stack version

VERSION: 9.1.0 BC2
BUILD: 87800
COMMIT: bf32d85033f9db9a8b57c1b68b26f3f19f48f1a5

Steps

1. Kibana 9.1.0 environment should exist
2. Navigate to cases tab under security section
3. Create a new case
4. On the cases tab, click on the columns button
5. Hide all the columns
6. Observe the empty UI is visible

Expected Result
At least one column [case name] being shown all the times

Screenshot

[elasticmachine]

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

[muskangulati-qasource]

@arvindersingh-qasource please review!

[arvindersingh-qasource]

Reviewed and Assigned to @vgomez-el

[janmonschke]

@muskangulati-qasource @arvindersingh-qasource @vgomez-el I'm not sure this is an issue. It's doing exactly what the user wanted and can be easily reverted. How do other tables in Kibana behave? Which column would always stay?

How did you come to the conclusion that the impact is high?

[muskangulati-qasource]

Hi @janmonschke,

You're right that the behavior is technically reversible. However, this issue was marked with high impact for the following reasons:

Empty UI with No Recovery Cues: When all columns are hidden, the table shows a completely blank state with no indication of what went wrong or how to bring columns back. This can be confusing for non-technical users, especially since there's no default column like "case name" pinned to maintain context.

We can consider this either a bug or a UX gap, but it does affect discoverability and usability in the security workflow, which is why I marked it high-impact. Let me know if you'd prefer to reclassify this issue under a UX enhancement.

Thank you!!