challenge-response issue when upgrading from 1.10.2 to 1.10.4

When starting VPN connection using command line:

nmcli con up id myvpnname --ask

I noticed that after the upgrade, I was able to connect the first time, but not the second time.

The reason was that the following lines were added to /etc/NetworkManager/system-connections/myvpnname after being connected:

[vpn-secrets]
challenge-response=xxxxx

I fixed it by removing the challenge-response line and by adding this new flag to the configuration file: challenge-response-flags=2. So with this modified configuration, I am able to connect using nmcli.

But when I try to connect using KDE plasma-nm GUI (with or without the added challenge-response-flags=2 line), when I try to connect:

• The popup asking for the challenge is displayed,
• I enter the challenge,
• The following lines are added to /etc/NetworkManager/system-connections/myvpnname

[vpn-secrets]
x-dynamic-challenge-echo:challenge-response=xxxxx

• nm-openvpn show the following error after 30s (very approximately):

NetworkManager[....]: <warn>  [....] vpn[0x.............,"myvpnname"]: connect timeout exceeded
nm-openvpn[....]: ERROR: could not read Auth username/password/ok/string from management interface
nm-openvpn[....]: Exiting due to fatal error