When resuming, the applet will reconnect to the connections set to automatically connect to. If a connection (e.g. WiFi) is set to automatically connect to another OpenVPN connection, on resume it'll connect, and show the connected icon, but the default route isn't set and checking the IP reveals the ISP's.

I need to disconnect, then reconnect again (VPN connection) for the route to be established correctly and work as expected.

This problem isn't present when Plasma starts for the first (i.e. on boot)

1) Go to sleep
2) Resume
3) plasma-nm will attempt to connect to WiFi, LAN, etc. And will attempt to connect to the VPN connection tied to the connection (say WiFi)
4) plasma-nm will show "connecting" and take the usual time to connect to VPN
5) "Connected" lock icon will appear
6) Checking the IP in browser reveals the original (ISP) IP
7) Disconnect the VPN connection, then connect again, the IP check is now showing the VPN's IP

Latest kernel, Plasma, and OVPN packages from Arch repos: plasma-nm 5.9.3, plasma-framework 5.32.0, openvpn 2.4.0, networkmanager 1.6.2, networkmanager-openvpn 1.2.8