Unable to show dual dimensions properly

[andredangellis.dias]

I think there is a wrong behavior when setting up dual dimensions.

When you set to have the alternate unit [inside brackets] over the main dimension Inventor invert the order causing to have inside bracket the Main unit (that is the opposite we expect). The only way to have desired result is set the main dimension as Alternate in the style  editor. It's not easy to explain because sounds contradictory convoluted because that way is the situation. Check images below:

I think the alternate unit must come inside brackets, but Inventor understand that the Main unit most come first inside bracket or not:

Then, it works only when your Main unit must be showed first.

Comes the question: Is that a BUG or the correct behavior?

[Frederick_Law]

The bracket does not control which number display "first".

It always display in same "order".

I always put Unit on Alternate.

It depends which style you pick, so pick the one you want.

[andredangellis.dias]

The problem is the unexpected behavior that can do a mess in the drawings.
We expect to have alternate dimensions in brackets. It does not follows that logic.

[Frederick_Law]

User setup where the bracket go.  So set it up the way it is "correct" in your standard.

IV always display alt on right and bottom.

I ues:

1.00

[25.4mm]

[andredangellis.dias]

Ok. I see that I can put it where I want. The situation become confuse when you have two styles to manage the position of the alternate units. Because Inventor keep the order I must take another and contradictory action to have the thing working as expected. In your case is not problem because you use the Right and Bottom position for primary units.
In My situation I use Left and Top. So I think that Alternate Units comes inside brackets (like Solidworks, autocad, Fusion and others). 

This example shows two styles with different positions.

The alternate units is set to show unit string. It's clear for me how it works, the problem is: If you want to show the alternate unit you keep it inside brackets. Inventor keep it coming first. Is it right? 
And in order to have the thing working as expected (Secondary/alternate units with brackets) I must invert the units also, and it looks contradictory because I must keep The primary unit as alternate in same drawing. Sounds weird no? Seem that how it works in Inventor. I accept that but Doesn't look right for me. That is why I'm asking because maybe I'm missing something or there is another way to get this result.