Paul Gessinger

@noraemi do you want to chime in?

I'll have a look at the macOS CI failure.

Ok, can reproduce the unit test failure with a clang13 build on CentOS8 too. The error is ``` 10:04:56 Chi2Fitter VERBOSE Step with size = 1.34078e+154 performed 10:04:56 Chi2Fitter VERBOSE...

This looks like a failure in the binning. This is a bit weird since the bin lookup should be safe, i.e. it shouldn't try to get bin number 7 when...

The binning that this is referring to here is the layer binning which is used to lookup sensor surfaces for an intersection with the layer surface during navigation. In theory...

Is there any way you could provide more information on the geometry construction. It's pretty difficult to diagnose what might be root problem here with just this log. Can you...

Python error looks like binding and script inconsistency to me.

Are the extents auto-determined here and that's what's failing here? IIRC `ProtoLayer::measure` is responsible for trying to automatically determine the extent from the contained surfaces and the envelopes are (should...

Ok, the spot where you insert the extent addition shouldn't have to set up the extent anymore, I think. [This line](https://github.com/acts-project/acts/blob/main/Plugins/DD4hep/src/DD4hepLayerBuilder.cpp#L79) calls the `ProtoLayer` constructor with a vector of sensitive...

@asalzburger @whit2333 is this still a problem after #829 and #820?