Much like area triggers, cargo space blocks are not affected by Lighten mode.
Lighten Off:
{F4584}
{F4576}
{F4588}
Lighten On:
{F4586}
{F4578}
{F4590}
To reproduce, just place down some cargo space blocks and toggle lighten mode.
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also the case for scaffolds and mesh and probably for any other block of that kind
sample:{F4595}