Exception in TGeoMixture::ComputeDerivedQuantities #8892
Description
Since this change #8556 in the root master
We see some failures in DD4hep tests against the LCG Dev3 installation, more details in AIDASoft/DD4hep#857 (comment)
Our tests are passing again if patching out the !fElements && from this line
root/geom/geom/src/TGeoMaterial.cxx
Line 803 in 5d536b2
Ping @agheata