Looks like this problem is still in effect. I had a wiresheet with a program linked to about 5 inputs
and 3 outputs. I deleted the program from the controller by way of the Schneider Config Manager
which ended up having the side effect of clearing out all the objects from the wiresheet...including
other objects not related to the program. If you leave the wiresheet and come back, the page is
inaccessible. If you do an "upload all" for the controller, you'll get the objects back, minus the one
you deleted.