Photoshop reverted work and deleted history

[bazzlin]

I was working with various layers in photoshop (cc 2018) on my Mac (Sierra 10.12.6). I had made several major changes to my project including rotating my canvas, placing a new image, making edits in camera raw filter, using the blur filter etc. The last step I made was to duplicate the layer I was working on. As soon as I did that, it reverted all of my changes back to the last time I duplicated a layer. About 10 minutes worth of work was gone. It wasn't in the history either. It's as if I had never done any of that work.

10 minutes isn't a very long time and luckily I save often and won't have to redo a ton of work. But it was concerning and I was just curious if anyone else had encountered this problem.

My husband is convinced that I must have 'hit a button' that caused this to happen. I did. "Command J"! It just doesn't make any sense.

[D Fosse]

The default shortcut for File > Revert is F12. Are you sure you haven't accidentally hit it?

[Loominary]

Don't know if this happened to you, but: If you double click on a layer with a photo in it, Photoshop will sometimes open a new file with only that layer in it, in a new tab. If you're not paying close attention, it can seem like you lost all your work, as if you reverted and lost all history. But really, your work is still there in the tab to the left! 🙂

[jane-e]

If you double click on a layer with a photo in it, Photoshop will sometimes open a new file with only that layer in it, in a new tab. 

By @Loominary

You have a different issue, Loominary. You are double-clicking a layer that is a Smart Object and that is expected behavior.

https://helpx.adobe.com/photoshop/using/create-smart-objects.html

Jane