I've been finding the same thing and it does seem to be a new bug, or at least one of which I've been previously unaware. One important thing is to make sure that all of the nodes in a texture are selected before trying to use the apply to all, otherwise unselected nodes will not be applied and, likely, connections broken. However, even then some 2D image nodes which apparently have the correct texture loaded still show up as blanks, even in their own preview window, after the apply to all option has been used. Reselecting the texture from the node's pull-down menu seems to fix this. Bill