From what I understand RealityView attachments is actually done to attach a 2D view onto a 3D object. That's not the scenario I'm talking about. Here we are talking about 2D views which are freely arranged in the user's space but they are not attached to any 3D object. The idea itself is interesting but I don't think RealityView attachments can answer this case.

@J0hn thank you for trick to resize the window. For the positioning of the window I will wait to see how the next beta of the sdk will evolve.

@tracyhenry @gchiste I did some tests with RealityView attachments and to add a 2D window on a 3D object it's true that it's pretty cool. On the other hand, managing an application that only has 2D windows in this way is not fun at all. I really hope that the next betas will bring an easier solution in this kind of case.

Trace in Xcode: [RTIInputSystemClient remoteTextInputSessionWithID:performInputOperation:] perform input operation requires a valid sessionID