### Expected Behavior _Please describe what should happen_ When you drag a block out of the toolbox into the workspace it should appear to be connected to the mouse pointer. ### Actual Behavior _Describe what actually happens_  ### Steps to Reproduce Reported in [Freshdesk](https://mitscratch.freshdesk.com/a/tickets/174559) ### Operating System and Browser Windows? Firefox 67.0.4 (64-bit)