'Reload' doesn't
If the source file changes, the new additions don't show up. The way I consider the function useful is to keep Symbolic Preview open, design new icons and check whether it exports correctly.
- Even if the icon sheet may be large, I recommend doing auto-reload similar to App icon preview, perhaps with an opt out toggle.
- If the view is scrolled, not resetting the view to the top would be appreciated to keep on checking the same icon on the grid.