Survey resets client-side stats when a new client subscribes
When a new client subscribes, all values are temporarily reset by a WebSocket/STOMP event for all clients:
MESSAGE
subscription:sub-2
destination:/topic/[...].feedback.stream
message-id:T_sub-2@@session-[...]
redelivered:false
__TypeId__:de.thm.arsnova.websocket.message.FeedbackChanged
priority:0
persistent:true
content-encoding:UTF-8
content-type:application/json
content-length:57
{"type":"FeedbackChanged","payload":{"values":[0,0,0,0]}}