I'm experiencing some strangeness while adding a thick border to a table-cell.
Why aren't there corners?
<fo:table-cell border-color="{$moonyellow}"
border-style="solid"
border-width="0.7em">
<fo:block padding="2mm" text-align="center">
<xsl:value-of select="./value" />
</fo:block>
</fo:table-cell>
I'm using FOP 2.1
Because the 'notches' are likely from/for the borders of the diagonal-corner cells.
Try <fo:table border-collapse="separate">
to use the 'separated borders model' (if FOP supports it). See https://www.w3.org/TR/xsl11/#border-collapse and https://www.w3.org/TR/REC-CSS2/tables.html#propdef-border-collapse