Make sure that distances wrt to a merged component are always float max
requested to merge ATLAS-EGamma/athena:KLMixture_reduction_do_not-recalculate_for_invalid into master
This is my guess for fixing the issue at ATLASRECTS-5571 ...
But as have not run a reproducer I might need some feedback from @wlampl
Edited by Christos Anastopoulos