caprine: High CPU usage when completely idle

$ uname -a
Linux hosanna 5.11.0-7620-generic #21~1624379747~20.04~3abeff8~dev-Ubuntu SMP Tue Jun 22 22:08:51  x86_64 x86_64 x86_64 GNU/Linux
$ dpkg -l caprine
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-======================================
ii  caprine        2.51.2       amd64        Elegant Facebook Messenger desktop 
$ kded5 --version
kded5 5.68.0

Even when completely idle, doing nothing, not receiving messgaes, Carprine will sit at 15% CPU usage. I would expect an idle application to use zero CPU, or at most, 1% or 2% while monitoring for new messages.