AC27 MEP Issues again

[Ket Yin]

 

Why does it always rotate the bottom half of the duct whenever i add a duct take-off from a vertical stack towards horizontally? I just cannot get my head around it. It just gets more and more surprises in using AC27 MEP modelling.

I use to assemble the MEPs with ease in AC26 and below. This is really a bummer.

ABSOLUTLEY DISSAPPOINTING.

Snap shot of my question included here.

 

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