Ran into a repeatable crash today in latest Si version on Windows.
8K RED clip (ProRes). Added a Roto node, defined a shape with layer. Then tried to add a new layer (via the + button in the Object window) to do add another tracker shape. Get a popup for the and crash every time. If on the other hand I just draw an x-spline shape, call up the tracker, it will create the layer automatically, and that worked fine.
@jan I am unable to reproduce the crash on my machine. Can you supply a set of steps? Is an 8K RED clip required? If so, could you provide that via private message?