id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1923	Connection Graph is not broken correctly	Christian Schubert	Adrian Pop	"the models 
Modelica.Electrical.QuasiStationary.SinglePhase.Examples.SeriesResonance
Modelica.Electrical.QuasiStationary.SinglePhase.Examples.ParallelResonance
fail because there is one equation missing. Looking into the code (+d=dumpdaelow) one notes that there is no equation for ground.pin.reference.gamma.
However, there are 4 equalityConstraint involving ground.pin.reference which do not count as equations, since they return an empty array.

I drew the connection graph with yEd (see attachment, dashed lines may be broken) and one can see that the ""broken connections"" (= equality constraints) do not even occur as edges in the connection graph. It seems that the equality constraints are produced from the connection set rather than the connection graph."	defect	closed	critical	1.9.0	Frontend	trunk	fixed	Connection Graph	Jens Frenkel