Host Not Visible for Permission Group Until Group Was Re‑Added

CMK version: Checkmk Enterprise Edition 2.4.0p22 / Appliance Version: v1.7.10

Hi everyone,

we ran into a strange issue this morning and I’m wondering if anyone has seen something similar.

A specific permission group was unable to see a host, even though the permissions were configured correctly. The host simply didn’t appear for users in that group. After removing the group from the host and adding it again, the host suddenly became visible as expected.

Has anyone experienced this behavior before? Is there a known bug that could cause permission groups to not update or apply correctly until they are re‑assigned?

Any insights would be appreciated.

Thanks!