Scroll View Indent

I've got the weirdest bug with my scroll view and I can't work it out for the life of me... help!

Details and screenshots here:

http://imgur.com/a/VE3qm

Unitypackage containing example here:

https://ufile.io/3hpwd

Basically, i'm trying to add a 3 pixel indent to my content within a scroll view (in this case text).

The content size fitter seems to reapply itself when saving, and removes the indent (in fact if you add a parent and indent that (Left = 3) it will set the content left to -3 just to cause me a headache. However, when you save it again, it reapplies the indent.

Anyone else come across this / got a fix?

Thanks

Chris