Hi,
I'm facing the same problem and using Liferay 6 like you mentioned
This is what I did and try to make some senses on this logic :
1) Published a web content
2) Edit web content, make changes and published right away > OK
3) Edit web content, make changes and saved as draft and then published right away > OK
4) Edit web content, make changes and saved as draft and exit
5) Go back to web content, publish > NOT OK nor saved as draft
Why?
Can you explain what's the reason and logic behind this publishing bit ...please..
In additional to that, save as draft button is not disabled, so is hard to make users to understand why they can't use it since is there enabled.
Get what I'm trying to say here?
Hope to hear from you soon!

Thanks!
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