I've been trying to figure out where all my customer attributes applied to my various entity members had disappeared to. Turns out it was a quirk in the designer UI that hide them. I think this is a bug or, at least, an opportunity to make the UI better:

Attached is a screenshot 1.png of one of my entity members (Shipment.AddressBilling). Where's my custom attribute for it!? I was sure I had entered it earlier! Ah ha, it turns out that the Attributes group box is not scrollable and so it appears that my custom attributes (which come after the "Default attributes inherited from project settings") are gone.

I figured out that by resize the footer section that contains errors and warnings, it would open up vertical space for the entity editor and reveal more content in there. Ah ha. My Attributes are visible now. See screenshot 2.png

So I think the designer could be tweaked to improve that. Either add vertical scrolling or even another set of nested tabs (one tab for "Default Inherited Attributes" and another for "Custom Attributes")

Designer version 5.2.1 26-Jun-2017

Hi Emmanuel,

I agree that in that specific scenario, it happens. I never noticed because either I have always the windows maximized, or I always use the footer's section tabs in collapsed mode when I don't have enough screen (resolution or another factor).

We'll see what we can do.

(edit) not really doable, I'm afraid. The area has a resizable control, and that makes it not trigger the scrollbars to appear when the area gets too small, even though we've set minimum sizes.