[ceph-users] Dashboard soft freeze with 19.2.1

Dear Ceph users, after the upgrade to 19.2.1 I experience a soft freeze of the web UI (old version, activated with `ceph dashboard feature disable dashboard`). When I click on the "Cluster status" widget I get only a blank small tooltip window, instead of e.g. the list of current warnings. After this all the other widgets and menu entries become unresponsive until I refresh the page. Is this a known/common issue? Thanks, Nicola