id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
3926	Parameter calculation with numerical Jacobian leads to wrong results	Patrick Täuber	Willi Braun	"The non-fixed parameters of the following model are calculated to 0 if calculateStrongComponentJacobians is skipped for initialization, which is obviously wrong:

{{{
model foo
  final parameter Real p1 = 1;
  final parameter Real p2 = 2;
  final parameter Real p3 = 3;
  final parameter Real p4 = 4;
  parameter Real q1 (fixed=false);
  parameter Real q2 (fixed=false);
initial equation
  -p1 = 3 * (p3 * q1 + p4 * q2);
  -p2 = 3 * (q1 * p4 - p3 * q2);
end foo;
}}}

A testing script is attached."	defect	new	high	Future	Run-time				Francesco Casella Lennart Ochel