writelog() doesn't work as normal with all of the logs. For example, if we change the level of application.log ( error to info ) then only the logs are written into the application.log.
Need to change the level of that log after running the writelog.cfm then only the log is written into the application.log.
This issue was fixed from 184.108.40.206-SNAPSHOT onwards. So, I close this ticket with resolution - fixed