Lightroom Classic - Photo edits disappear after going to next photo and then back.

[streetzen20]

I'm not sure what is causing this issue but sometimes after I've edited a photo and go to the next photo and then go back to the photo I just edited, it's reverted back to the original so it looks like I've lost the edits. After some further investigation, it is happening to the preview of the photo because in the edit history the edits are there. So I would just do the edits again before but going to the history is a better way to go to the last edit and look of the photo. Or Adobe can fix this issue and no work around would be necessary. 

[GoldingD]

Sounds like a problem with the library previews. You might try deleting them and recreating them.

Sort of like this:

https://helpx.adobe.com/lightroom-classic/kb/lightroom-gives-error-preview-cache.html

Ahh, but what LrC version? Version 11.5 fixed a preview issue:

https://helpx.adobe.com/lightroom-classic/kb/fixed-issues.html