yesterday I hit "ctl+A" to select everything and went to properties->size to calculate file/folder size.
Unfortunately afterwards, I was unable to deselect any files/folders in that same session.
Without realizing it I right clicked on a folder and chose delete.
Because WinSCP is faulty in unselecting when you click a single file, all files remained selected, and all files were deleted.
Improper behaviour times 10.
Please fix before others are affected!!