It seems that when I'am in larges buildings/areas such as hangars along the coast, items aren't visible unless I'am close to them or I zoom in : not a spawn bug, looks like an objects drawing distance problem due to the fact that they're still visibles when i zoom in on theses items/loot.
Look for screenshots : Normal/Zoomed. All my settings are maxed up, Only set SceneComplexity=250000 on my .cfg (instead of 1000000 max setting)
I Haven't noticed if the bug appear Outdoor too, when i got time I will try it by dropping some objects and going far from them.
EDIT : Appear outdoor too, objects are invisible untill you get few step from them.
Sorry for my bad english. {F29719} {F29720} {F29721} {F29722} {F29723} {F29724}