The patch management no longer loads in standalone. It's because the access control annotartions are parsed differently compared to versions < 2.6.x.

The annotations on the patch manager presenter read as

@AccessControl(resources = {"/{selected.host}", "/{selected.host}/core-service=patching"}, recursive = false)

The expression "/{selected.host}" resolves to an undefined address which makes problems in the new way the required resources are parsed. Bug seems to be code copied to ReadRequiredResources.