1px transparent edge appearing on assets generated from masked/cropped objects

[JimCollinson]

I'm finding on some files generated assets are left with a 1px transparent/white border rather than being full bleed as expected.

I've tried various tricks to remedy this without success.

[JimCollinson]

Here is a link to a file which exhibits this behaviour.

https://dl.dropboxusercontent.com/u/565744/Sondek%20LP12%2070s%20Advert.psd

[Momomotazedi]

Any update on this one?
I'm having a similar issue where I have hundreds of layers which share the exact same mask (full mask to the document edges), but some are getting exported with 1 pixel offset.
When I export the same asset maually without using the generator, the output looks correct without any offset.
I noticed that this usually happens when the layer is a smart object.
Any idea how can I fix this?