id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
4254	Wrong numerical handling of conditional equations	Francesco Casella	Willi Braun	"Please simulate the attached test model. 

The variable s, which is the result of a double integration, crosses the zero threshold at time = 0.1.

Based on the equations, the variable Pw should be zero until that moment, and then start growing afterwards. The result reported in the attached figure is instead obtained:
- at the previous time step (time = 0.0741), Pw is zero
- at time = 0.1 before the event, Pw is shown to be 0.05
- at time = 0.1 after the event, Pw is again zero as it should be

The value of Pw just before the event is totally bogus. I'm not sure if this is a problem with the solver or with the result file generation."	defect	closed	blocker	1.13.0	Backend	v1.12.0	fixed