System property "line.separator" is different CMD vs instantiation from C++

ADDITIONAL SYSTEM INFORMATION :
Windows (any)

A DESCRIPTION OF THE PROBLEM :
When calling java program from CMD line, i.e. java xxx.class, the line.separator system property is 0x0D 0x0A
If java is instantiated from C++ (JNI Instantiation API), the line.separator property is 0x0D 0x0D 0x0A


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Can be reproduced on Java 8 and 11. Did not check latest.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expect line.separator to be consistent

FREQUENCY : always