WP Site Health Check and Siteground Memcache

Hi there.

When I turn on the memcache facility in my Siteground Optimizer plugin dashboard, the Site Health widget does not load on my WP dashboard, it just says: ‘no information yet’, and when I go the Site Health area, while the results appear to have loaded, at the top of the page it keeps saying: ‘results are still loading…’ only that line and circle never go away, unless I turn memcache off, then Site Health shows all results fine.

Any ideas?