I have a RadGalleryElement in my RadRibbonBar. It has both a minimum and maximum row count of four, and currently contains 6 items. I have "selection" enabled for the Gallery. The selection states persist for the first row of items, but do not for my second row.
Pressing the ALT key should displays the Key Tips and moves keyboard focus to the RadRibbonBar by pressing any of the typical keyboard navigation key (i.e., TAB, SHIFT+TAB, ARROW RIGHT, ALT+ARROW, DOWN, SPACE BAR, etc.)