Current observations sofar. There are to cases where the launcher-icon gets some semi-transparent rectangle added to it.
1.) Drag out a launcher-icon and move it around the screen a bit. Reinsert it back into the launcher. Then you will see a slight greyish portion of a rectangle on the left side of the dragged launcher icon.
2.) Start an application from the launcher. This also adds some greyish-transparent rectangle to the launcher-icon.
Current observations sofar. There are to cases where the launcher-icon gets some semi-transparent rectangle added to it.
1.) Drag out a launcher-icon and move it around the screen a bit. Reinsert it back into the launcher. Then you will see a slight greyish portion of a rectangle on the left side of the dragged launcher icon.
2.) Start an application from the launcher. This also adds some greyish-transparent rectangle to the launcher-icon.