Face inset, different result for faces with same sizes

Hello,

i cant figure out why face inset is working different for extruded or loop cut faces for example.
Face inset for block 1 gives a quadratic result as expected.
For block 2 i get a different result.

I even cant find a hint in the 2.6 manual that some parameter could effect this.

[ATTACH=CONFIG]340631[/ATTACH]

cant see pic(invalid attachment), but by the sounds of it you need to apply scale in obj mode(ctrl-a -> scale)

Yes, thats slove this problem. Thx.