I feel like l have seen it in some tutorial but I can’t find it again. Isn’t there a keyboard shortcut to go back to previous camera view in viewport?
I’m not exactly sure what you’re asking, are you saying you want to know how to jump to a previous Actor_camera?
If that is the case then you can just use the Actor Classes list that is by default at the top right of the editor to quickly go in-between them. If that isn’t what you meant then let me know!
What I mean is undo/redo view change. Ctl+number key sets view bookmarks in UE that I can go back to. Is there also a shortcut key to do undo view change like how it’s done in 3ds max?
http://docs.autodesk.com/3DSMAX/16/ENU/3ds-Max-Help/index.html?url=files/GUID-1C408482-D342-4DB5-8A05-8AC3E9A55110.htm,topicNumber=d30e11843
I don’t know of that feature in UE4. The best practice for now is to use bookmarks(you can use 1,2,3,4,et. to switch between bookmarks)
You may want to make a feature request for it though.