With Gimp for Windows - version 1.2.3, I do the following operations : 1. Start with a base image 2. Make an elliptical selection (I have also the problem with other kinds of selection). 3. Copy it, clear it. 4. Put the floating selection into a new layer L1 5. In layer L1, go to step 2 throw step 4 and create layer L2 6. .... This way, layers L1,L2, L3, L4, ... are created. In theory, the base image should be split into the different layers. With all the eye icons on, we should see the original base image. In practice, there is a gap appearing in the position of the pasted selections. This gap appears sometimes at the level layer L4, sometimes L5 or L6. Thanks for any support.