By tabbar do you mean a toolbar with the list of styles displayed as tabs? (Like in Opus 9)
If so, your styles must be changing which toolbars are displayed when you select them.
You probably want to go to Preferences / Layouts and Styles / Styles and edit each style to tell it not to modify the toolbars.
Alternatively, you could re-save each style with the toolbars turned on, if you do want them to modify some toolbars while keeping the one with styles tabs always visible.