Hello,
Using Pythonista 3.3(330025) on 5thGen iPad Pro. iOS 15.2

No matter where I am in the UI designer, anything I paste shows up at the uppermost level.

Example:
I start a fresh UI. Within the main view I add via the "+" a custom view. I enter the custom view by tapping it and then selecting "subviews". While in the subview I create a button. I then tap and copy the button. When I paste it, it doesn't paste into the current context, but rather one level up in the main view. This appears to happen regardless how I copy/paste (tap menus as well as CMD-C, CMD-V via external keyboard produce the same results).

Am I utilizing the UI designer wrong? Any help appreciated. Thank you.