It seems like the current grasshopper speckle connector does not support the native block instance properly. In the example below, I sent over a simple cube brep to speckle from gh. When I convert the brep to a block instance and send it to speckle, there is no object preview in the speckle viewer.
Hey @Julius_Ang ,
Legacy Grasshopper connector does not support blocks. We are actively working to add support for them in the next-gen Grasshopper connector, which is coming soon. However, it won’t be part of the initial alpha.