It seemed Core Helper agent exited accidentally.
When the next time you run into "Abnormal disconnect" issue, please first run
ps aux | grep coressh
in Terminal.app, and you should get output like this:
yang 4010 0.0 0.0 408543520 3360 ?? S 5:31PM 0:00.02 E78WKS7W4U.io.coressh.ShellHelper
yang 4745 0.0 0.0 407962720 48 s014 R+ 6:07PM 0:00.00 grep coressh
yang 4542 0.0 0.1 409509264 15840 ?? S 6:04PM 0:00.05 /Users/yang/Library/Group Containers/E78WKS7W4U.io.coressh/io.coressh.Helper.app/Contents/MacOS/io.coressh.Helper
But if it prints:
yang 4745 0.0 0.0 407962720 48 s014 R+ 6:07PM 0:00.00 grep coressh
It indicates Core Helper agent exited for various reasons (killed or abnormal exit). For this case, instead of reinstall Core Helper, try run this command to load Core Helper agent again:
launchctl load ~/Library/LaunchAgents/E78WKS7W4U.io.coressh.helper.plist
And then execute ps again:
ps aux | grep coressh
You should see three items printed.
Also, could you please Enable logging and paste the desensitized output?
Kindly Regards,
Yang