In order to more reliably pass the asset to the operator, use a string property with the full asset path instead of using a context pointer. This is required to support the quick favorites menu, shortcuts, and to draw operator inputs in the redo panel. In all of those situations the original context isn't available. This also feels safer, since we rely less on storing pointers to data with a less-defined lifetime. Pull Request: https://projects.blender.org/blender/blender/pulls/110018