We're currently experiencing the same problem, and it's incredibly frustrating to the point where I'm seriously considering switching to a different CAD tool.
Our history with SpaceClaim spans 17 years, making us one of its longest-standing users. Over this time, we've tailored our entire company around the software, creating numerous custom add-ins and accumulating tens of thousands of files. Consequently, the decision to explore alternatives is not one I'm taking lightly.
I am sure there are others experiencing this and I believe Ansys could do something about it but now that Spaceclaim is in "maintenance mode" I feel they no longer care about their users.
You are navigating away from the AIS Discovery experience