tristan_cordeboeuf Yes. The API for Viewport 2.0 changed between Maya 2016 and Maya 2017 - and we lost an API call that we were depending on the be able to select Attachments, Tissues, Tets etc. in the viewport 🙁 That was why we added the Scene Panel in the first place.
It likely would be possible for us to write something that would work, but we would likely have to completely take over the drawing to do it (rather than piggyback on Maya's drawing API)
-jj