XUL box for %1$S element contained an inline %2$S child, forcing all its children to be wrapped in a block.  This can often be fixed by replacing “display: -moz-inline-box” with “display: -moz-inline-box; display: inline-block”.
Bok me XUL pi %1$S jami tye ki iyi rek %2$S latin, diyo lutino weng me boyo gi i ka geblockngo.  Man kine mogo kitwero moko ne kun i loko "yar: -moz-inline-box" ki "yar: -moz-inline-box; yar: inline-block".