Do you have this error as well? When I want to preview a post, there's an error message: "Please enter a valid issue date". The issue date is set correctly, but on the preview there's "30 Nov" displayed. O_O.
HAHAHA... that's funny: when I changed main Blog locale from Polish utf-8 to English-US, the problem disappeared.
WTF???
There's really something strange with that languages... how come the locale interferes with the preview issue date?!
Global settings -> Regional, change Date fmt and Time fmt
I am moving this topic to support. It is a bug and it is known. For the bug report section of the forum I want it to be described and examined better.
Thanks