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”.
La caxa XUL del elementu %1$S contenía un fíu %2$S na llinia, forciando a tolos sos fíos a quedar endolcaos nún bloque. Davezu, esto pue igüase reemplazando "display: -moz-inline-box" con "display: -moz-inline-box; display: inline-block".