"Com.symantec.mes.systemextension" becomes heavy load while using Chrome and Firefox

"Com.symantec.mes.systemextension" becomes heavy load while using Chrome and Firefox.
The symptom does not occur while using Safari.

Enviroments:
Macbook Air 2018(Big Sur 11.2)
Macmini M1(Big Sur 11.2)

When I contacted Norton support, they said they were able to confirm the phenomenon.

However, I was told that there is no way to know that it has been resolved. Is this true?