Also, please always try the latest build from our buildbot before reporting a bug.

I import the fbx into Unity, and the object is lost.
And I try to use 95f020c853d6-windows64 can reproduce this problem.
import unity:

in blender:

windows 3d viewer:

Well then… Again, would be best to check with ref app like Maya (in the odd case that Unity would not support multi-level parenting), but besides that, I don’t know what to say… Afaik this has never been an issue before, nothing changed in that code since ages, I would expect it to have been reported already if that had been an issue. :/

I try to use blender-2.82-a8d001fef5e8 to reproduce this problem.

1. Create three box, and set parent one by one

2. Select all box to fbx and apply transform.

3. Import the fbx file into scene

So, the last child box dimensions become 0.02(before export all box dimensions is 2), and the position become too close 0,0,0
And I upload the export and re-import video here.

If the object whth only one layer parent, is all OK. But if more than one , after export it have a error translation.

And I import the fbx into maya and the problem as before.
And screenshot here.