At Team Synchronization, using revert on an added file caused deletion of the file! 

I am using Eclipse 2020-06 with Subclipse version 4.3.0.201901172050.
After using the "share project" function, I proceeded to play with what files should be added or not.
After changing my mind on some point, I decided to revert all adds and start over.
And so I revert the adds on all my source directories.
And Eclipse proceeded to delete all my source directories with no undo.