No layer thumbnail for single element layers
Issue: There's no layer thumbnail when dragging single elements to a new layer.
This bug has been already mentioned and acknowledged, but has not been fixed, nor has had received any sort of update or follow up on its status. I believe it only affects v29.8.2 onwards.
Here's a direct quote from the discussion describing the bug:
"When dragging a graphic element to a new empty layer, there is no image preview in the layer square (row Size Medium Option in Layer Panel). When you add another element, a preview appears, but if you only have one element in a layer, you have to do extra steps to see the contents of the layer."
For designers who rely on layer thumbnails for design work, the unreliable layer thumbnails makes immediate changes hard to see and track. It disrupts workflow.