Execute custom command: "C:\Program Files (x86)\WinMerge\WinMergeU.exe" /u /r /s /x "!^!" "!"
(Apply to directories: ticked, Local command: selected)
Remote files are downloaded to temporary directory.
WinMerge opens correctly etc.
WinSCP attempts to upload local files.
Problem did not occur in versions prior to 5.7
WinSCP version 5.7