Calculated highlights for focusable nodes sometimes extend outside the bounds of the node, apparently when CSS positioning with overflow: hidden is involved.
Examples:
[Originally filed as T53166] https://en.wikipedia.org/w/index.php?title=Mohammad_Azharuddin&oldid=564025381&veaction=edit
[Originally filed as T55226] https://he.wikipedia.org/wiki/ראשון_לציון?veaction=edit