According to the documentation a slash '\' on the last character of a line is meant to act as a continuation character. This does not work where the line is ended with \r\n.
my_prop_name = first_part_of_value \
If the platform uses \r\n to end the line then second_part_of_value will be treated as a key name not a continuation of the value for my_prop_name.
The bug is caused by a cut and paste error in the code:
Around line 256 of properties.cpp the following code currently appears:
case 0x20: // '\n'
It should read thus:
case 0x0A: // '\n'