Why did you add a stroke to the Layer Thumbnail of empty layers?
In previous versions of Illustrator, if you deleted all the content of a layer or sublayer, you could immediately see that it was empty because its thumbnail in the Layers palette lost its stroke. Now all layer thumbnails have a border regardless. This was a very useful feature, and I can't imagine why it would deliberately be removed. Can you please add it back?
-
Ven, 'previous versions' — which one did you mean?
I tested it with CS4 and I see no border missing in an empty layer (check the screenshot please). The only difference I see is the '>' arrow symbol...
I do however remember a difference with the border, but it was about the opacity of an object... can you provide more info? screenshots?