When websockets_encryption is set to true on foreman 1.16 spice doesn't work because JavaScript ./app/assets/javascripts/spice.js (line 5) have hardcoded schema "ws://" that in this case should be "wss://". Websockets encryption is required to have spice working on Chrome (version 64.0.3282.140) without additional configuration as it by default refuses to connect to websockets without encryption and truted certificate. File is unchanged in current head.