We develop Android application. We base on old version of similar application developed in our company. This old application was designed by some noobs which didn't follow UI Android design rules.
Now our product owner says: do stuff the same way as old application.
(Small example: user can add items to a list; in Android you have + button on Action Bar for that; but we have "Add item" as last item on list.)
My eyes hurts when I look on that design and furthermore implementing it needs quite a lot of effort to bow good tools to generate bad design.