Really this is the font size for second and subsequent lines of a title. The idea being the first line of a title text box could be larger than subsequent lines.
"line" here means something separated by a <br/>. So this is not the case of the title line overflowing to second and subsequent lines. (python-pptx can't know if this happened and nor can md2pptx - without extensive font metric calculations.)
Really this is the font size for second and subsequent lines of a title. The idea being the first line of a title text box could be larger than subsequent lines.
"line" here means something separated by a
<br/>
. So this is not the case of the title line overflowing to second and subsequent lines. (python-pptx can't know if this happened and nor can md2pptx - without extensive font metric calculations.)