Aligning objects with transparency - transparency cropped
I have a problem with aligning objects with transparency.

this is what photoshop sees as transform control, but the real size of this object is the whole visable area.
I have 90 frames of animation that can not be aligned properly because of photoshop auto disposal of transparent pixels (every frame is cropped diferently by photoshop in next frames - smoke is comming out).
Why?
It's also annoying in export from layer panel.
Anyone had similar problem?
