I have attached screenshots and HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions\profile1
https://i.postimg.cc/sD9kQ6Tc/s1.png
https://i.postimg.cc/Vkf3jqTc/s2.png
https://i.postimg.cc/kGPHDK8z/s3.png
I imported your reg file, setup the connection the way you did and also tried with the 0.71, 0.72, 0.73 and it’s working fine on 3 different machines.
I can see that the text " - PuTTY" (without the double-quotes) is not in the window. In the latest beta (build 11010) there’s a Plugin Option to specify a custom window title match. The problem I see in your screenshot is that the window title is basically the username/prompt which may be different. You can set the Window Title in PuTTY (in the registry WinTitle). Maybe setting that to " - PuTTY" fixes the issue.
I really have no idea why the window title is different in your case.
NoRemoteWinTitle: 0 (default) -> 1 fixes the issue with “Existing Putty Session” connection type.
It is set to 1 in “SSH connection” type.
May be it is better to validate the value of NoRemoteWinTitle and display a warning to user before connection?


