Yes, the object is a modular BP and made with several thiny parts. So, too small to be computed.
Is there a minimal bound size? I noticed that +/- 30cm is the limit as I tested with the default cube with a scale of 0.3.
This is annoying because complex objects have to be spliited in separates ones to be part of lumen computation, but in this way, we encounter this kind of issue due to scale…