Kibana version: 9.1.0-BC

Elasticsearch version: 9.1.0-BC

Browser version: Chromium Engine Version 138.0.7204.93

Browser OS version: MacOS 15.5

Original install method (e.g. download page, yum, from source, etc.): ECH Staging

Describe the bug: Collapsed nav no longer allows expanding

Steps to reproduce:

1. Use the new solution nav (set space to o11y, for example)
2. Collapse the navigation
3. Click on an accordion section

Result: Broken expansion
Expected: Working expansion

9.1. (broken)

8.18 (working)