In Preferences, go to Display -> Status Bar.
Click the Codes button to show available status bar codes, and some submenus items are displaying just blank area.
I think in DOpus 8 there used to be something there, but in DOpus 9 it is just blank!
Can anyone confirm or is it just happening to me?
Yes, I can. 
Greetings,
Jan
It's not just you, I see the same thing (on XP and Vista). It's an issue. Looks like it affects several Status Bar Codes. I haven't modified my Status Bar in years, so I couldn't tell you what the missing text is.
@Leo
Can you report this issue?
Report bugs using the official web site...
That way they're added to the bug database.
Done!
This should be fixed in the next update which Jon said will be released quite soon.
In case it's helpful while you wait, here is what the menu should look like. As you can see, the missing items are just headings that you cannot click on, so if you know what the text was supposed to say then the bug shouldn't prevent you from doing anything:
Oh - after installing yesterday's fix, it already works again in my (German) version... 
Greetings,
Jan
Oh, maybe the fix was included in the update that already went out. Even better. 