Hi @axw, I rolled back to version 8.3.2 of kibana and now i'm able to get the span events. The issue is i can only see the name of the event
for instance
span.addEvent('get data from elastic', {
event: 'Success',
message: 'Get data from elastic Success'
})
i only see

though that data is visible in elastic index as labels,

it is not visible in APM UI