It freezes if disconnected after laptop hibernation or internet goes down

Hello. When WinSCP freezes, I can't do anything on it, i need close it through Windows 10 task manager. My WinSCP is the latest (5.17.2).

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

Thank you very much. I will try it out today.

I forgot to explain I'm using a portable (PortableApps) version. Last night I hibernated my laptop and the problema didn't happen. I will check again and try the debug version after the issue comes up again.

We have nothing to do with PortableApps version of WinSCP.
The problem might have been resolved already:
https://winscp.net/tracker/1829
I have send you a development version for testing.

No problem. I'm using and analysing whether the problem happen.