Something about FTP connections keeps changing my scroll style settings. I haven't figure out exactly how to duplicate this, but I have my "Smooth horizontal scroll" and "Smooth vertical scroll" set to ON under Tools > Options > Appearance > General > Scroll style. Some combination of opening an FTP connection to a remote machine, closing the FTP tool window, opening and closing local or remote text files, keeps making my scroll settings all of the sudden change to OFF. I set them back to ON and then open and close FTP connections, start and quit SlickEdit, open and close documents, and sooner or later they are back to OFF again. I haven't figured it out, but maybe someone else has seen this or can duplicate it.
For FTP, I use C:\Cygwin64\bin\ssh.exe.
When I run ssh.exe -V, I get:
OpenSSH_6.8p1, OpenSSL 1.0.2a 19 Mar 2015.