Luminent Plane not working

:open_mouth: When I create luminar planes into a group/ component I have very often the problem that it stops working when adding additional luminar planes.

Exploding the group helps for the exploded item but changes often the working luminar planes into not working ones

And yes all luminar planes a on the frontside of the plane.
Is this a bug?
Any work around?

Hi - please excuse my lack of English :blush:
I do not understand what you describe. Is it about materials, which are occupied with emitter material?
Maybe any screenshots might help?