Rendered components are stick in Firefox using table render mode

System

Just modify the template match "table" in the layout.page.xsl like this (in fact add a nbsp in the TD tag)

<xsl:template match="table">
<!-- Spacer Table -->
<xsl:if test="@margin-left > 0">
<table cellpadding="0" cellspacing="0" border="0" style="display:inline;float:left;">
<tr><td style="width:{@margin-left}px;"><xsl:text disable-output-escaping="yes">&nbsp;</xsl:text></td></tr>
</table>
</xsl:if>

<table cellpadding="0" cellspacing="0" border="0" style="display:inline;float:left;">
<xsl:apply-templates select="tr"/>
</table>
</xsl:template>