Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce 840M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 384.76
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-04 00:52, hash: rBc13e10a7404d
Short description of error
When Exporting FBX with Apply Transform, the parent and child object are exported correctly, but child of child object get wrong transform.
Exact steps for others to reproduce the error
this is a simple example.
the file contains 3 arrow model. arrow2 is a child of arrow1, and arrow3 is a child of arrow2. As shown below.
Export a fbx file with Apply Transform On. And you can see that arrow1 and arrow2 are exported correctly, but arrow3 has wrong rotation and position. The fbx looks the same both in unity and reimported into blender.