why did I assign a very large number to the block?

I created the map as usual, saved it, loaded it into the project, I launch it and it doesn’t work, I opened the map in notepad (.txt) and I see something like this: 3221225480 in one texture, and all the rest are normal, how can I fix this?

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This number is a “global tile ID”, which apart from storing a number that can be traced back to a tile in one of the tilesets, also contains the flipped state of the tile. In binary form, it is 11000000000000000000000000001000, so it has the highest two bits set, which means the tile was both horizontally and vertically flipped.

Please see the documentation on global tile IDs for more information about reading these numbers.

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