Recently, I noticed a very strange (and very annoying) bug in Ubuntu 18.04 (not sure which package causes it): I have a remote webdav drive mounted using mount.davfs, and sometimes files saved on that drive disappear.
I have several different types of files saved on that drive, but only markdown files seem to be affected by it. However, note that these markdown files are also the only files that I edit (using Vim and Gedit).
Whatever the cause of this might be, I noticed that those files all ended up in lost+found, renamed to .goutputstrema-XXX.
Q: Can anybody replicate? Which program create files with the ending .goutputstream-XXX?