Editing remote text file fails

[William Finck]

This morning I ran updates and used the new Filezilla version 3.66.5 for the first time. Editing a remote configuration file on one of my servers, after I saved the file and responded to the upload dialog, filezilla crashed and the window closed.

When I went to the server directory to edit the file in the shell, I ofund that the file was set to a size of 0 bytes, so the contents were totally lost. I was able to retrieve the file from a backup made last night, but otherwise this would have been a difficult loss to overcome.