Thanks for your report. Though I cannot reproduce the problem. Would you be able to post a screen recording showing, what exactly are you doing?

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Also, what version were you using before?
If you downgrade, does the problem go away?

It happens when we minimize the progress screen while uploading the files.

So, when it finishes and you click in the taskbar icon to restore the WinSCP window, the screen is freeze.

Good afternoon.

Synchronizing files to a remote FTP server is freezing WinSCP screen when the process is finished.

Version is 6.5.5:
https://i.imgur.com/8eVsULi.png

This start happening when I updated to this last releases.

I appreciate your help.
Leandro