I found several bugs with phpmyadmin setup ui (host/phpmyadmin/setup).
The content of setup pages is displayed to the right of the right edge of its tabs if the sum of widths of tabs and content is less than the browser width (tested with opera)
Tabs positions change when the browser is resized and the positions change further when clicking on the tabs at the right edge(tested with firefox, opera).
Tabs and content appear separately. There is some space between tabs and the contents (tested with chrome, firefox, opera).