I can't do anything with a local alias, neither on element web nor on element android. The UI shows it exists, but search doesn't return it, joining doesn't wor

I can't do anything with a local alias, neither on element web nor on element android. The UI shows it exists, but search doesn't return it, joining doesn't work. With element android I can publish the original name to the local directory, but that fails on element web. So it seems to be mostly a failure.