Login dialog does not have keyboard focus after tray icon doubleclick

[xmedeko]

I start openvpn-gui.exe when on Windows start up. It does not connect automatically, just the icon is in the system tray. When I double click the icon in the tray, OpenVPN log window and then OpenVPN login dialogs popup up. The cursor is blinking in the password field of the OpenVPN login dialog, but when I try to type my password, nothing happens. I have to manually click the mouse in the password field, then I can type password and hit Enter to confirm the dialog.

I would like to have focus in the password field when the login dialog pops up, so I can type password immediately.