This was observed with a specific navigation sequence, but may be a more general problem with the browser Back button when navigating between apps.

To reproduce on stage or production (Google Chrome: Version 105.0.5195.102)

1. Login to ConsoleDot
2. Click on Red Hat Enterprise Linux, then Red Hat Insights on the left nav
3. Click on Vulnerabiltiy, then CVEs on the left nav
4. Click on the link just below "CVEs with security rules"
5. Press the browser Back button

At this point, the "Inventory" entry in the left nav is highlighted and a 400 error is generated.

Request to backend:

src_js_bootstrap_js-src_js_unfetch_index_js-node_modules_redhat-cloud-services_frontend-compo-4f5f41.5eccd41f5f47ba66620b.js:7336          GET https://console.stage.redhat.com/api/inventory/v1/hosts/cves 400

Error message shown to user:

"'cves' does not match '^{[0-9a-fA-F]{8}\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{12}$|}[0-9a-fA-F]{8}[0-9a-fA-F]{4}[0-9a-fA-F]{4}[0-9a-fA-F]{4}[0-9a-fA-F]{12}$'\n\nFailed validating 'pattern' in schema['items']:\n    {'format': 'uuid',\n     'pattern': '^[0-9a-fA-F]

\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{4}\\\\-[0-9a-fA-F]{12}$|^[0-9a-fA-F]{8}[0-9a-fA-F]{4}[0-9a-fA-F]{4}[0-9a-fA-F]{4}[0-9a-fA-F]{12}$',\n     'type': 'string'}\n\nOn instance[0]:\n    'cves'"