the problem with this issue is that it has only happens to me once.. I have not been able to reproduce it ever since..
However, what I did was:
#1 published a folder "news"
#2 started editing ver2 of this folder
#3 Then in a second browser, start editing the same folder
#4 Published ver2 in the 2nd browser
#5 I was then still able to edit folder in 1st browser and to take focus away from input field in order to trigger autosave ( no errors given by autosave then)
#6 Back in the 2nd browser, I cleared all cache via admin
#7 Viewing the folder I see that changes applied in step #5 was visible on the published folder
Step #5 - #7 I could repeat multiple times.
However, When I now try to reach the same "state", I am not able to....