I cannot reproduce this setups. @Germano Cavalcante (mano-wii) could you investigate? Maybe it is related to the sRGB booleans in eevee_material.c.

The problem is that the pointer to the uniform used in DRW_shgroup_uniform_bool(...) in EEVEE_materials_cache_populate(...) is released before it is read by GPU_shader_uniform_vector_int(...).
Every time the DRW_cache_object_surface_material_get(...) is called for an object, the pointer in cache->auto_layer_is_srgb is released and another allocated in place.
But in the file we have intances and so the same object goes through EEVEE_cache_populate(...) in the same loop.
Thus shgroup now references the same uniform two times, but one with invalid pointer and other with valid pointer.

A solution would be to skip the mesh_cd_extract_auto_layers_names_and_srgb function for a same object.