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”.
XUL-kašćik za element %1$S jo nutśkowny źiśecy element %2$S wopśimjeł, wšykne jogo źiśi nuzkaju se w bloku łamaś. To dajo se cesto pórěźiś, z tym až "display: -moz-inline-box" wuměnja se pśez "display: -moz-inline-box; display: inline-block".