There is a potential bug in the background job handling in the must-gather scripts. Currently it does not cause any visible fault. The issue can be triggered if strict error checking is enabled. However that cannot be enabled in the whole set of scripts as that causes multiple other issues. Those scripts are not prepared with strict error checking in mind in the first place.

There is a related PR that shows a fix for the background job handling bugs https://github.com/openstack-k8s-operators/openstack-must-gather/pull/64