If you are using Palette Jigsaw and have noticed a bug, read this page to see if the bug is known. If it is listed here, you can be assured that it is scheduled to be looked at. If your issue is not listed here, please comment and describe the issue in as much detail as possible so that we can duplicate the problem and subsequently fix it. Here is the current list of known issues:
Solution Palette Placement
If a solution palette is zoomed and moved, it is not restored in the proper place when a puzzle is resumed from a saved state. A workaround is to simply move it using a two finger pan gesture to the desired location.
No Resize with Single Piece
If a palette contains only a single piece, and it is moved so that it overlaps the edge of the palette, the palette is not resized to contain the whole piece. Furthermore, the border of the palette is drawn over the piece. This does not adversely affect game play. A solution has been found and will be available in the next release.