I have made a largish tile-based map, and wish to expand it to the left slightly. I made the layout bigger and selected all the tiles and moved them, which when letting go of the mouseclick, causes the tiles to end up misaligning, which is a problem because with the tileset I use, causes white gaps and looks bad D:
Any reason why this happens? Is it a known problem? The grid option is off just incase that's important.