X placed a voice call.
X send data to setup the call.
X send data to setup the call.
X send data to setup the call.
X send data to setup the call.
X ended the call.

Moreover, why he placed a call, while send data and ended the call?
Yes, it's a known limitation for now, it has been descoped from first release
https://www.figma.com/file/h6XHDrTXXTBHgdFl15f5pD/%5B%2378%5D-Timeline?node-id=2%3A56
Will come soon
Also looks like a bug in NotificationDrawer that does not filter out some events
-> Change to bug, call in timeline will have separate issue; keep this one for notification drawer
Most helpful comment
Also looks like a bug in NotificationDrawer that does not filter out some events
-> Change to bug, call in timeline will have separate issue; keep this one for notification drawer