Hi Raymond,
Thanks for the fast reply. Login details as before.
It is not always. Most of the time you make a post .. uncheck uncategorized and check another one and after saving there are two checkboxes checked. if you then put it away again it will work.
I created several posts but I am unable to reproduce the issue(attached). When the post is first saved/published, the selected category is showing correctly. Am I missing something here?