I've recently migrated my company from from AnyConnect to GP, version 4.1.6. I've had similar reports of issues. Also centered around less than optimal / consistent connectivity mediums.
My company has some private jets with onboard Internet connectivity provided via Go-Go wireless (Same as on commercial airlines). I've had users report that GP VPN said it was "connected" but the users had no connectivity otherwise. I've also had users report about similar experiences when using the hotspot functionality via their mobile phones.
Unfortunately I've not been able to identify a cause / fix to this point.
This has been an issue I've experienced since utilizing GlobalProtect years ago. Spotty connections will cause GlobalProtect to stay connected, even if the connection itself isn't capable of actually passing anything more than ICMP requests with high loss. If the client actually loses connection fully, then it works as expected.
It hasn't been a pressing issue for any of my users or the companies that I support, so I haven't dug too far into it. But as far as I can tell it's limited to networks with high packet loss displaying this condition.
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