I am working on an UX Design and created a symbol roughly translated into "Background-Frame" that is used across several UX Mockup Screenshots. I also created a bunch of Button-Symbols like "add", "edit", "settings". I now realized that the "settings" button should always be at the exact same spot in the frame so I thought - ok - let's move it into the "Background-Frame" symbol by dragging the "settings" symbol into "Background-Frame" symbol in the layer panel. While that works this action is not synced into the other "Background-Frame" instances. Yes - "Sync" is on for symbols. Dragging a regular rectangle into the symbol works just fine. It seems to be a bug that is triggered when symbols are dragged into symbols. Is this something that will get fixed eventually? Symbols within symbols are quite cool!