Now this could well be an error in my SVG exporter (these files are converted from XAML files). However these files do render OK and they have been fed through the SVG validator and passed.
According to the spec (See DataTypeNumber) it's perfectly OK to have an 'e' in a number.
According to the spec (See DataTypeNumber) it's perfectly OK to have an 'e' in a number.
I've added an issue: https://github.com/svg/svgo/issues/63