When I try to select the GreasedLineMesh, I click the colored area and the console panel sometimes printed null picked mesh. It’s just in some points that the mesh can be picked. You can try it in the PG!
@roland please cc
Hey @RichardFly please do a research on the forum first 
First topic found searching “Greased Line Picking” :
Your PG fix (adapt the line.intersectionThreshold) :
https://playground.babylonjs.com/#H1LRZ3#800
My bad, I certainly do a research but with a not that correct keywords.Thanks.
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