I am trying to add a used interface element to a class, to allow an external object to provide functionality to the class. However, I cannot add a used interface object to the class: I click on the "Expose interface" icon, click on the class, and I do not get the dialog to configure the interface - EA just jumps right to making a provides interface with the default parameters. And of course it's not possible to change from provides to uses after it's added.
I am running under Wine 6.2, on a 64 bit machine, in Windows 10 mode. I noticed that when using the Windows 7 mode I couldn't even resize the windows, so I suspect this may be an interaction with Wine.
I've also tried using a virtual desktop, with no change to the behavior.