Hello,
I came across this in a file that someone sent me. It was generated by Inkscape 0.47 r22583.
The font-family property is set on a text element, while child tspan elements have -inkscape-font-specification set to the full font name, but the font-family has not been set even though it has changed. Inkscape should have written font-family: Bitstream Charter.
SVG viewers are therefore (correctly) not applying Bitstream Charter, in this example. And the content creator thinks that SVG viewers have 'font issues' as they don't display what was designed.
Is this a known bug?
SVG snippet:
<text xml:space="preserve" style="font-size:40px;font-style:normal;font-weight:normal;text-align:center;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans" x="437" y="202" id="text3695"><tspan sodipodi:role="line" id="tspan3697" x="437" y="202" style="font-size:28px;font-weight:bold;-inkscape-font-specification:Bitstream Charter Bold">Semantic</tspan><tspan sodipodi:role="line" x="437" y="237" id="tspan3699" style="font-size:28px;font-weight:bold;-inkscape-font-specification:Bitstream Charter Bold">Web</tspan><tspan sodipodi:role="line" x="437" y="272" id="tspan3701" style="font-size:28px;font-weight:bold;-inkscape-font-specification:Bitstream Charter Bold">Technologies</tspan></text>