I have a weird issue with Manjaro and with the Cisco Anyconnect Secure VPN Client application we are using at work. When I connect to the VPN, the vpnagentd daemon fails to reconnect every 29-29:45 minutes and needs to be killed. I need to reconnect the main connection too, or the connection will 'fail' in less than 5 minutes the next time. But the twist is that with the exact same configuration everything works fine with Debian 10, Ubuntu 18.04 and 19.10 and with CentOS 7. I tried this with 4 different PCs(intel, broadcom, realtek, ralink chips) and the results were the same - Ubuntu is fine but Manjaro isn't. My colleagues also don't experience any issue but none of them are using Manjaro.
Now, the vpnagentd process doesn't tell us anything, not even in debug mode so I'm not sure what's the issue. What's up with Manjaro's network settings? What is different in it compared to Debian?