I don't know if it's an issue with tIDE or my computer, but whenever I edit large maps and replace tiles, it doesn't update the map's canvas. It still processes the command, and I'm sure if I re-packed a map and loaded it in SDV the things I've changed may be there, but it makes it nigh-impossible for me to edit maps over 100x100. For example: I've placed the highlighted tile (Idx 56) at the position 11,13 (directly bottom right diagonal to the Command History box). The tile Idx 56 is a slab-looking concrete path, but the canvas retains the beach sand. The command history tells me that it has indeed been placed, though.